Question

HELP!!
Will medal and Fan!!!!!
PLEASE!!!

Answer 1

Joyce is trying to solve the equation y = x2 − 8x + 7 using the quadratic formula. She has made an error in one of the steps below. Find the step where Joyce went wrong.

Step 1: x equals negative 8 plus or minus the square root of the quantity eight squared minus four times one times seven, end quantity, all over two times one.

Step 2: x equals negative 8 plus or minus the square root of sixty-four minus twenty-eight all over two times one.

Step 3: x equals negative 8 plus or minus the square root of thirty-six all over two times one.

Step 4: x equals negative 8 plus or minus six all over two.

Step 1
Step 2
Step 3
Step 4

Answer 2

thought it was A but its not

Answer 3

@NatsuOniKaze @CandyCove

Answer 4

@soprano.h.d0816 @pizza12

Answer 5

l

Answer 6

what is that?
i said it was D not A and got it wrong...

Answer 7

@AloneS

Answer 8

I believe it is Step 1

Answer 9

ok next one?
i have 7

Answer 10

@airjordan200

Answer 11

Decide which part of the quadratic formula tells you whether the quadratic equation can be solved by factoring.

−b b2 − 4ac 2a

Use the part of the quadratic formula that you chose above and find its value, given the following quadratic equation:

2x2 + 7x + 3 = 0

Answer 12

this is the next one...

Answer 13

its a fill in the number
i thought it was 0 but its not

Answer 14

@CandyCove

Answer 15

@ilovehorses14

Answer 16

I believe it's 1

Answer 17

okay thanks

Answer 18

How can you tell when a quadratic equation has no real solutions?

When the radicand is negative
When b in the quadratic formula is greater than the radicand
When the radicand equals zero
When the radicand is not a perfect square

Answer 19

thought it was a but nope

Answer 20

@PhantomCrow

Answer 21

If the number under the square root is negative.

Answer 22

sooo before that one the other one that one was a=2 b=7 c=3

Answer 23

Since square roots of negative numbers cannot real numbers

Answer 24

ok thanks and what do you mean @PhantomCrow

Answer 25

so its C?

Answer 26

If you think about it, a square root is basically asking what two same numbers multiply to give you what is being rooted. You cannot multiply two same numbers and receive a negative number.

Answer 27

When the radicand is not a perfect square

Answer 28

It's D

Answer 29

okay thanks

Answer 30

ima o wit that to

Answer 31

What are the approximate solutions of 4x2 + 3 = −12x to the nearest hundredth?

x ≈ −3.23 and x ≈ 0.23
x ≈ −2.72 and x ≈ −0.28
x ≈ 0.28 and x ≈ 2.72
x ≈ −0.23 and x ≈ 3.23

Answer 32

It isnt D.

Answer 33

i thought this was a but its not

Answer 34

i said c

Answer 35

Its A

Answer 36

last one?

Answer 37

can you help me with this one?

Answer 38

ok

Answer 39

What are the approximate solutions of 4x2 + 3 = −12x to the nearest hundredth?

x ≈ −3.23 and x ≈ 0.23
x ≈ −2.72 and x ≈ −0.28
x ≈ 0.28 and x ≈ 2.72
x ≈ −0.23 and x ≈ 3.23

Answer 40

i reput it
its not a

Answer 41

thats what i said and i got it wrong

Answer 42

@PhantomCrow u there?
@airjordan200

Answer 43

Solve: 5x2 + 25x = 0.

x = 0, x = 5
x = 0, x = −5
x = −5, x = 0, x = 5
x = 5, x = 25

Answer 44

what about this one?

Answer 45

i said a but nope

Answer 46

sorry im busy but i can help u

Answer 47

What are the exact solutions of x2 = 5x + 2?

x = x equals 5 plus or minus the square root of thirty-three all over 2
x = x equals negative 5 plus or minus the square root of thirty-three all over 2
x = x equals 5 plus or minus the square root of seventeen all over 2
x = x equals negative 5 plus or minus the square root of seventeen all over 2

Answer 48

help me with these three please and than there is one more

Answer 49

@airjordan200

Answer 50

ok

Answer 51

i said all of these were a

Answer 52

x=-2/3

Answer 53

where did u get that from?

Answer 54

What are the approximate solutions of 4x2 + 3 = −12x to the nearest hundredth?

x ≈ −3.23 and x ≈ 0.23
x ≈ −2.72 and x ≈ −0.28
x ≈ 0.28 and x ≈ 2.72
x ≈ −0.23 and x ≈ 3.23

Answer 55

Solve: 5x2 + 25x = 0.

x = 0, x = 5
x = 0, x = −5
x = −5, x = 0, x = 5
x = 5, x = 25

Answer 56

What are the exact solutions of x2 = 5x + 2?

x = x equals 5 plus or minus the square root of thirty-three all over 2
x = x equals negative 5 plus or minus the square root of thirty-three all over 2
x = x equals 5 plus or minus the square root of seventeen all over 2
x = x equals negative 5 plus or minus the square root of seventeen all over 2

Answer 57

Solve: 16x2 − 81 = 0.

x = 4, 9
x = −4, −9
x = 9 over 4, x = −9 over 4
x = 81 over 16, x = −81 over 16

Answer 58

these are the last 4 please help me

Answer 59

help?

Answer 60

@sws_pvt

Answer 61

what does it mean when you say 16x2? Are you supposed to multiply those?

Answer 62

16x^2

Answer 63

@sws_pvt i have 4 more please

Answer 64

no its not its the value x

Answer 65

im confused

Answer 66

so whats goin on?

Answer 67

i need help with these last 4 problems...

Answer 68

256x-81=0
256x=81
x= 3.1604
For your last question

Answer 69

i give up

Answer 70

dont give up

Answer 71

(4x+9)(4x-9)=0
x= +/- (9/4)
.
.
.
6x - 2 = x^2
0=x^2-6x+2
0=x^2-6x+9+2-9
7=(x-3)^2


+-sqrt(7)=x-3
3%2B-sqrt%287%29=x
.
.
.
8x + 4 = 2x^2
0=2x^2-8x-4