(9x^2-7x+4)-(3x^2-3x+6)=

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Solution for (9x^2-7x+4)-(3x^2-3x+6)= equation:


Simplifying
(9x2 + -7x + 4) + -1(3x2 + -3x + 6) = 0

Reorder the terms:
(4 + -7x + 9x2) + -1(3x2 + -3x + 6) = 0

Remove parenthesis around (4 + -7x + 9x2)
4 + -7x + 9x2 + -1(3x2 + -3x + 6) = 0

Reorder the terms:
4 + -7x + 9x2 + -1(6 + -3x + 3x2) = 0
4 + -7x + 9x2 + (6 * -1 + -3x * -1 + 3x2 * -1) = 0
4 + -7x + 9x2 + (-6 + 3x + -3x2) = 0

Reorder the terms:
4 + -6 + -7x + 3x + 9x2 + -3x2 = 0

Combine like terms: 4 + -6 = -2
-2 + -7x + 3x + 9x2 + -3x2 = 0

Combine like terms: -7x + 3x = -4x
-2 + -4x + 9x2 + -3x2 = 0

Combine like terms: 9x2 + -3x2 = 6x2
-2 + -4x + 6x2 = 0

Solving
-2 + -4x + 6x2 = 0

Solving for variable 'x'.

Factor out the Greatest Common Factor (GCF), '2'.
2(-1 + -2x + 3x2) = 0

Factor a trinomial.
2((-1 + -3x)(1 + -1x)) = 0

Ignore the factor 2.

Subproblem 1

Set the factor '(-1 + -3x)' equal to zero and attempt to solve: Simplifying -1 + -3x = 0 Solving -1 + -3x = 0 Move all terms containing x to the left, all other terms to the right. Add '1' to each side of the equation. -1 + 1 + -3x = 0 + 1 Combine like terms: -1 + 1 = 0 0 + -3x = 0 + 1 -3x = 0 + 1 Combine like terms: 0 + 1 = 1 -3x = 1 Divide each side by '-3'. x = -0.3333333333 Simplifying x = -0.3333333333

Subproblem 2

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

Solution

x = {-0.3333333333, 1}

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