Question

Find the larger root for
7x^2− 2 = 2

Answer 1

7x^2 =4
x^2 =4/7
x_1,2=+/- sqrt(4/7) = +/- (2sqrt7)/7

Answer 2

what ?

Answer 3

i dont get it

Answer 4

first you need to assum to both sides 2
after divide both sides by 7

Answer 5

- so than will get

x^2 = 4/7

x_1,2 =+/- sqrt(4/7) = +/- (srt4)/sqrt7) =+/- 2/(sqrt7) = +/- (2sqrt7)/7