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Simplifying
-8x2 + 7 = 4
Reorder the terms:
7 + -8x2 = 4
Solving
7 + -8x2 = 4
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 = 4 + -7
Combine like terms: 7 + -7 = 0
0 + -8x2 = 4 + -7
-8x2 = 4 + -7
Combine like terms: 4 + -7 = -3
-8x2 = -3
Divide each side by '-8'.
x2 = 0.375
Simplifying
x2 = 0.375
Take the square root of each side:
x = {-0.612372436, 0.612372436}
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