Question

Solve the equation showing all work.

3x²+5=152

Answer 1

x = 7

Explanation:

3x²+5=152

3x²=147

x²=147/3

x² = 49

x = 7

Answer 2

x =±7

Explanation:

3x²+5=152

To find x, subtract 5 from each side

3x²+5-5=152-5

3x²=147

Divide each side by 3

3x²/3=147/3

x²=49

Take the square root of each side

`\sqrt{x^(2) }=√(49)`

x =±7