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Simplifying
8x2 + 15 = 47
Reorder the terms:
15 + 8x2 = 47
Solving
15 + 8x2 = 47
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '-15' to each side of the equation.
15 + -15 + 8x2 = 47 + -15
Combine like terms: 15 + -15 = 0
0 + 8x2 = 47 + -15
8x2 = 47 + -15
Combine like terms: 47 + -15 = 32
8x2 = 32
Divide each side by '8'.
x2 = 4
Simplifying
x2 = 4
Take the square root of each side:
x = {-2, 2}
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