Question

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

Answer 1

Answer:

$x=\± 1$

Step-by-step 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.

$\frac{7x^2}{7}=\frac{7}{7}$

$x^2=1$

Take square roots on both sides.

$x=\± \sqrt{1}$

Answer 2

Answer:

x = ±1

Step-by-step explanation:

=> 7x² = 13-6

=> 7x² = 7

Dividing both sides by 7

=> x² = 1

Taking sqrt on both sides

=> x = ±1