Question

x2 - 8x +16 = 0

Answer 1

@nincompoop go head and explain

Answer 2

thats a quadratic, what do you wanto do with it ?

Answer 3

find discriminant

Answer 4

i gotta do b^2-4ac

Answer 5

the formula is b² − 4ac

Answer 6

compare it with below :-

\(ax^2 + bx + c\)

Answer 7

a = 1
b = -8
c = 16

Answer 8

plug them and do
b^2-4ac

Answer 9

I WILL EXPLAIN!!!

Answer 10

@rane did u see an -88 on there or no u tell me
@ganeshie8 -8^2-4(1)(16)

Answer 11

okiee uri

Answer 12

well the problem was that someone said
a=3
b=8
c=2
i should've checked it my own instead of believing that person

Answer 13

It will be
(-8)^2 - 4(1)(16)

Answer 14

this is wht made everything wrong

Answer 15

hmm...

Answer 16

the answer now is -128

Answer 17

careful...

Answer 18

64 - 64

Answer 19

Answer is 0

Answer 20

@xlegendx yeah i'll read the q' next time my own

Answer 21

0 but whch one 0,one double root or 0, two complex root

Answer 22

hun?

Answer 23

can u post that list again

Answer 24

\(\pm\) 0 lol

Answer 25

lol

Answer 26

just copy and paste my dear sis

Answer 27

dont write them again

Answer 28

@jazzyfa30 Options? :P

Answer 29

i think she was referring to

b^2 - 4ac > 0 => 2 roots
b^2 - 4ac = 0 => 1 root
b^2 - 4ac < 0 => 2 complex roots

Answer 30

the properties of a discriminant thingy

Answer 31

D=1,two rational roots
D=40, two rational roots
D=-47,two complex roots
D=289,two rational roots
D=289,two irrational roots
D=0, one double nroot
D=0,two complex roots

Answer 32

compare what you just said and to what i just said. i think you'll think of something to think of

Answer 33

i think its the 0 one doble root ????????

Answer 34

since @uri volunteered i'll let her confirm

Answer 35

Okay i don't know about how to find roots but i know about the dicriminant which i esaid is 0 and explained too.

Answer 36

said*

Answer 37

should i confirm then?

Answer 38

its rational roots i think

Answer 39

@xlegendx Go ahead.

Answer 40

yes pls @xlegendx

Answer 41

here's a hint:

the factored form of x^2 - 8x + 16 = 0 is

(x-4)(x-4)

Answer 42

the roots of that animal is x = 4 and x = 4

Answer 43

yes so i am right becoz both roots r positive so it rational

Answer 44

brb quran time.

Answer 45

ok @rane do you not see the answer choses i posted them for a reason

Answer 46

c u later

Answer 47

@jazzyfa30 do you have any idea now which is the right answer?

Answer 48

D=0, one double nroot

Answer 49

@xlegendx can u say the ans now

Answer 50

that s what i said it is not nroot its root my mess up

Answer 51

(x-4)(x-4)
^ ^

1 double root

Answer 52

as rsadhvika said, it's 0, double root. for the reasons he stated

Answer 53

o yeah he/she is right

Answer 54

the ans is D

Answer 55

she

Answer 56

LOL K

Answer 57

see i knew i was right thank you @rsadhvika

Answer 58

:) good work everyone !!!!