4x^2+4=40

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Solution for 4x^2+4=40 equation: 


Simplifying
4x2 + 4 = 40

Reorder the terms:
4 + 4x2 = 40

Solving
4 + 4x2 = 40

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '-4' to each side of the equation.
4 + -4 + 4x2 = 40 + -4

Combine like terms: 4 + -4 = 0
0 + 4x2 = 40 + -4
4x2 = 40 + -4

Combine like terms: 40 + -4 = 36
4x2 = 36

Divide each side by '4'.
x2 = 9

Simplifying
x2 = 9

Take the square root of each side:
x = {-3, 3}

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