Question

What is 7x^2-6=442

Answer 1

7x^2= 442+6
X^2=( 442+6)/7
X= sqrt(442+6)/7

Answer 2

do you understand what abyss did ?

Answer 3

let me break it down step by step....
7x^2 - 6 = 442 -- add 6 to both sides
7x^2 - 6 + 6 = 442 + 6
7x^2 = 442 + 6
7x^2 = 448 -- divide both sides by 7
7x^2/7 = 448/7
x^2 = 448/7
x^2 = 64
x = sq rt 64
x = 8

does that help any ??

Answer 4

yes . thank you .

Answer 5

I probably should not have given the answer....but do you understand or do you have any questions ?