0=40x^2-80x-3200

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Solution for 0=40x^2-80x-3200 equation:


Simplifying
0 = 40x2 + -80x + -3200

Reorder the terms:
0 = -3200 + -80x + 40x2

Solving
0 = -3200 + -80x + 40x2

Solving for variable 'x'.

Combine like terms: 0 + 3200 = 3200
3200 + 80x + -40x2 = -3200 + -80x + 40x2 + 3200 + 80x + -40x2

Reorder the terms:
3200 + 80x + -40x2 = -3200 + 3200 + -80x + 80x + 40x2 + -40x2

Combine like terms: -3200 + 3200 = 0
3200 + 80x + -40x2 = 0 + -80x + 80x + 40x2 + -40x2
3200 + 80x + -40x2 = -80x + 80x + 40x2 + -40x2

Combine like terms: -80x + 80x = 0
3200 + 80x + -40x2 = 0 + 40x2 + -40x2
3200 + 80x + -40x2 = 40x2 + -40x2

Combine like terms: 40x2 + -40x2 = 0
3200 + 80x + -40x2 = 0

Factor out the Greatest Common Factor (GCF), '40'.
40(80 + 2x + -1x2) = 0

Factor a trinomial.
40((10 + -1x)(8 + x)) = 0

Ignore the factor 40.

Subproblem 1

Set the factor '(10 + -1x)' equal to zero and attempt to solve: Simplifying 10 + -1x = 0 Solving 10 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-10' to each side of the equation. 10 + -10 + -1x = 0 + -10 Combine like terms: 10 + -10 = 0 0 + -1x = 0 + -10 -1x = 0 + -10 Combine like terms: 0 + -10 = -10 -1x = -10 Divide each side by '-1'. x = 10 Simplifying x = 10

Subproblem 2

Set the factor '(8 + x)' equal to zero and attempt to solve: Simplifying 8 + x = 0 Solving 8 + x = 0 Move all terms containing x to the left, all other terms to the right. Add '-8' to each side of the equation. 8 + -8 + x = 0 + -8 Combine like terms: 8 + -8 = 0 0 + x = 0 + -8 x = 0 + -8 Combine like terms: 0 + -8 = -8 x = -8 Simplifying x = -8

Solution

x = {10, -8}

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