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Simplifying
8x2 + 7 = 47
Reorder the terms:
7 + 8x2 = 47
Solving
7 + 8x2 = 47
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '-7' to each side of the equation.
7 + -7 + 8x2 = 47 + -7
Combine like terms: 7 + -7 = 0
0 + 8x2 = 47 + -7
8x2 = 47 + -7
Combine like terms: 47 + -7 = 40
8x2 = 40
Divide each side by '8'.
x2 = 5
Simplifying
x2 = 5
Take the square root of each side:
x = {-2.236067978, 2.236067978}
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