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Simplifying
5x * 5x + -40 = 0
Reorder the terms for easier multiplication:
5 * 5x * x + -40 = 0
Multiply 5 * 5
25x * x + -40 = 0
Multiply x * x
25x2 + -40 = 0
Reorder the terms:
-40 + 25x2 = 0
Solving
-40 + 25x2 = 0
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '40' to each side of the equation.
-40 + 40 + 25x2 = 0 + 40
Combine like terms: -40 + 40 = 0
0 + 25x2 = 0 + 40
25x2 = 0 + 40
Combine like terms: 0 + 40 = 40
25x2 = 40
Divide each side by '25'.
x2 = 1.6
Simplifying
x2 = 1.6
Take the square root of each side:
x = {-1.264911064, 1.264911064}
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