Group x terms
(2x^2+8x)-12=0
undistribute 2
2(x^2+4x)-12=0
take 1/2 of 4 and square it, add negative and positive of it insde (2^2=4)
2(x^2+4x+4-4)-12=0
factor perfect square
2((x+2)^2-4)-12=0
distribute
2(x+2)^2-8-12=0
2(x+2)^2-20=0
add 20 to both sides
2(x+2)^2=20
divide both sides by 2
(x+2)^2=10
sqrt both sides, remember to take positive and negative root
x+2=+/-√10
minus 2 both sides
x=-2+√10 and -2-√10
Answer:
46
Step-by-step explanation:
I would hAve say 2x23 which would have = to 46 that's what I got not sure if I'm correct
?=4
explanation:
the whole thing is 13, and it’s split in 2 sections. section 1 is 9, so to find the length of section 2, you would do 13-9=4.
