(2x^2-7x^3)-(8x^2-9x^3)=

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Solution for (2x^2-7x^3)-(8x^2-9x^3)= equation:


Simplifying
(2x2 + -7x3) + -1(8x2 + -9x3) = 0

Remove parenthesis around (2x2 + -7x3)
2x2 + -7x3 + -1(8x2 + -9x3) = 0
2x2 + -7x3 + (8x2 * -1 + -9x3 * -1) = 0
2x2 + -7x3 + (-8x2 + 9x3) = 0

Reorder the terms:
2x2 + -8x2 + -7x3 + 9x3 = 0

Combine like terms: 2x2 + -8x2 = -6x2
-6x2 + -7x3 + 9x3 = 0

Combine like terms: -7x3 + 9x3 = 2x3
-6x2 + 2x3 = 0

Solving
-6x2 + 2x3 = 0

Solving for variable 'x'.

Factor out the Greatest Common Factor (GCF), '2x2'.
2x2(-3 + x) = 0

Ignore the factor 2.

Subproblem 1

Set the factor 'x2' equal to zero and attempt to solve: Simplifying x2 = 0 Solving x2 = 0 Move all terms containing x to the left, all other terms to the right. Simplifying x2 = 0 Take the square root of each side: 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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