Question

Is anyone kind enough to stick with me... And help me with 4 big problems? work and everything

Answer 1

ok

Answer 2

you really good with algebra?

Answer 3

@Vocaloid @agent0smith can you guys help me with 4 big problems?

Answer 4

sure

Answer 5

thanks... if you want i can put each question in a individual question

Answer 6

sure

Answer 7

that works

Answer 8

k... sorry its 3 questions one is 2 parts

Answer 9

Solve each equation, if possible. Write irrational numbers in simplest radical form. Identify the strategy you used to get your solution. X^2-9=0

Answer 10

x^2 - 9 = 0

start by adding 9 to both sides

Answer 11

x^2 - 9 + 9 = ?

Answer 12

x^2?

Answer 13

x^2-18

Answer 14

good

so x^2 = 9

take the square root of both sides to get

x = 3 or x = -3

as your solutions

Answer 15

i got it right the first time?

Answer 16

yes

Answer 17

for the 'strategy' name i would just say isolating the variable

Answer 18

ok so x =-+3

Answer 19

good, what's next?

Answer 20

let me write it down really quick

Answer 21

ok for the one we just did i have to pick inverse operations, quadratic formula, factoring

Answer 22

inverse operations, then

Answer 23

(adding 9 was how we "inversed" the -9)

Answer 24

x^2+4x+2=0

Answer 25

doesn't seem like we can factor it

use the quadratic formula

Answer 26

a = 1, b = 4, c = 2

Answer 27

here it is if you need a refresher

http://tothereal.files.wordpress.com/2013/05/quadratic-formula.jpg

Answer 28

cant be solved

Answer 29

what do you mean, you just solved it

Answer 30

the answer exists, it's just not a whole number

Answer 31

its an approximate number though? does that count as solved?

Answer 32

yes

Answer 33

the 2 root 2 part is exact

Answer 34

the only approximation is the decimal conversion

Answer 35

ohh ok... now i gotta figure out how to do the work

Answer 36

just write down the formula

show where you plugged in a, b, and c

then just show the steps you used to simplify

Answer 37

which is a,b,c?

Answer 38

a = 1, b = 4, c = 2

Answer 39

then plug them into the formula

Answer 40

so it would be 1^2+4+2

Answer 41

what

Answer 42

write down the formula i gave you

Answer 43

http://tothereal.files.wordpress.com/2013/05/quadratic-formula.jpg

Answer 44

now replace "a" with 1, "b" with 4, and "c" with 2

then simplify the expression

Answer 45

ok

Answer 46

let me know what you get