Question

3x^2-4=8 ....... Solve the following equation by taking square roots! PLZ SHOW WORK ASAP TY!

Answer 1

Answer:

x =  ±2

Step-by-step explanation:

3x^2-4=8

Add 4 to each side

3x^2-4+4=8+4

3x^2 = 12

Divide by 3

3x^2 /3 = 12/3

x^2 = 4

Take the square root of each side

sqrt(x^2) = ±sqrt(4)

x =  ±2

Answer 2

Answer:

$x=\± 2$

Step-by-step explanation:

$3x^2-4=8$

$3x^2-4+4=8+4$

$3x^2=12$

$\displaystyle \frac{3x^2}{3}=\frac{12}{3}$

$x^2=4$

$x=\± \sqrt{4}$

$x=\± 2$