D=-4x^2+9x-4-x^2+4x+4

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Solution for D=-4x^2+9x-4-x^2+4x+4 equation: 


Simplifying
D = -4x2 + 9x + -4 + -1x2 + 4x + 4

Reorder the terms:
D = -4 + 4 + 9x + 4x + -4x2 + -1x2

Combine like terms: -4 + 4 = 0
D = 0 + 9x + 4x + -4x2 + -1x2
D = 9x + 4x + -4x2 + -1x2

Combine like terms: 9x + 4x = 13x
D = 13x + -4x2 + -1x2

Combine like terms: -4x2 + -1x2 = -5x2
D = 13x + -5x2

Solving
D = 13x + -5x2

Solving for variable 'D'.

Move all terms containing D to the left, all other terms to the right.

Simplifying
D = 13x + -5x2

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