(7x^2-4x)-(5x^2+2x)=

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Solution for (7x^2-4x)-(5x^2+2x)= equation:


Simplifying
(7x2 + -4x) + -1(5x2 + 2x) = 0

Reorder the terms:
(-4x + 7x2) + -1(5x2 + 2x) = 0

Remove parenthesis around (-4x + 7x2)
-4x + 7x2 + -1(5x2 + 2x) = 0

Reorder the terms:
-4x + 7x2 + -1(2x + 5x2) = 0
-4x + 7x2 + (2x * -1 + 5x2 * -1) = 0
-4x + 7x2 + (-2x + -5x2) = 0

Reorder the terms:
-4x + -2x + 7x2 + -5x2 = 0

Combine like terms: -4x + -2x = -6x
-6x + 7x2 + -5x2 = 0

Combine like terms: 7x2 + -5x2 = 2x2
-6x + 2x2 = 0

Solving
-6x + 2x2 = 0

Solving for variable 'x'.

Factor out the Greatest Common Factor (GCF), '2x'.
2x(-3 + x) = 0

Ignore the factor 2.

Subproblem 1

Set the factor 'x' equal to zero and attempt to solve: Simplifying x = 0 Solving x = 0 Move all terms containing x to the left, all other terms to the right. Simplifying x = 0

Subproblem 2

Set the factor '(-3 + x)' equal to zero and attempt to solve: Simplifying -3 + x = 0 Solving -3 + x = 0 Move all terms containing x to the left, all other terms to the right. Add '3' to each side of the equation. -3 + 3 + x = 0 + 3 Combine like terms: -3 + 3 = 0 0 + x = 0 + 3 x = 0 + 3 Combine like terms: 0 + 3 = 3 x = 3 Simplifying x = 3

Solution

x = {0, 3}

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