Question

Solve the equation using square roots. 7x2 + 6 = 13

Answer 1

`x=\± 1`

Explanation:

`7x^2+6=13`

Subtract 6 on both sides of the equation.

`7x^2+6-6=13-6`

`7x^2=7`

Divide both sides with 7.

`(7x^2)/(7)=(7)/(7)`

`x^2=1`

Take square roots on both sides.

`x=\± √(1)`

Answer 2

x = ±1

Explanation:

=> 7x² = 13-6

=> 7x² = 7

Dividing both sides by 7

=> x² = 1

Taking sqrt on both sides

=> x = ±1