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Simplifying
-5x2 + 7 = -4
Reorder the terms:
7 + -5x2 = -4
Solving
7 + -5x2 = -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 + -5x2 = -4 + -7
Combine like terms: 7 + -7 = 0
0 + -5x2 = -4 + -7
-5x2 = -4 + -7
Combine like terms: -4 + -7 = -11
-5x2 = -11
Divide each side by '-5'.
x2 = 2.2
Simplifying
x2 = 2.2
Take the square root of each side:
x = {-1.483239697, 1.483239697}
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