Question

solve each quadratic equation. Show your work 4x^2 = 100

Answer 1

well first you need to get it into the form ax^{2}+bx+C

so you would subtract 100 from both sides.

\[4x^{2}-100 = 0 \]

Answer 2

will 100 cancel out?

Answer 3

on the right side it will but not the left so we would now get

\[4x^{2}-100 = 0 \]

Answer 4

ohh okay i think i know what to do

Answer 5

okay so show me the next step

Answer 6

multiply by 2?

Answer 7

so you would factor out a 4.

\[4(x^{2}-25) = 0 \]

then divide both sides by 4

Which would give you this

\[x^{2}-25 = 0 \]

now how do you solve this?

Answer 8

add a 5?

Answer 9

watch this we add 25 to both sides.

\[x^{2}+25-25 = 0+25 \]

\[x^{2} = 25 \]

Answer 10

how would we find x @kimyy563d ?

Answer 11

*raises hand* I KNOW I KNOW PICK ME PICK ME

Answer 12

haha okay continue

Answer 13

im confused