Question

Given g(x)=3x2+3 find x if g(x)=78 Help me please

Answer 1

x = ± 5

Explanation:

Given

g(x) = 3x² + 3 and g(x) = 78 , then equate the right sides, that is

3x² + 3 = 78 ( subtract 3 from both sides )

3x² = 75 ( divide both sides by 3 )

x² = 25 ( take the square root of both sides )

x = ±
`√(25)` = ± 5

That is x = - 5 or x = 5

Answer 2

The answer is 5

Step-by-step explanation:

Given g(x)=3x2+3 find x if g(x)=78 = 5

Hope this helped you :)