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Simplifying
8x(x) + 5 = 20
Multiply x * x
8x2 + 5 = 20
Reorder the terms:
5 + 8x2 = 20
Solving
5 + 8x2 = 20
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '-5' to each side of the equation.
5 + -5 + 8x2 = 20 + -5
Combine like terms: 5 + -5 = 0
0 + 8x2 = 20 + -5
8x2 = 20 + -5
Combine like terms: 20 + -5 = 15
8x2 = 15
Divide each side by '8'.
x2 = 1.875
Simplifying
x2 = 1.875
Take the square root of each side:
x = {-1.369306394, 1.369306394}
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