-4x^2+4x+15=(2x+3)(5-2x)

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Solution for -4x^2+4x+15=(2x+3)(5-2x) equation:


Simplifying
-4x2 + 4x + 15 = (2x + 3)(5 + -2x)

Reorder the terms:
15 + 4x + -4x2 = (2x + 3)(5 + -2x)

Reorder the terms:
15 + 4x + -4x2 = (3 + 2x)(5 + -2x)

Multiply (3 + 2x) * (5 + -2x)
15 + 4x + -4x2 = (3(5 + -2x) + 2x * (5 + -2x))
15 + 4x + -4x2 = ((5 * 3 + -2x * 3) + 2x * (5 + -2x))
15 + 4x + -4x2 = ((15 + -6x) + 2x * (5 + -2x))
15 + 4x + -4x2 = (15 + -6x + (5 * 2x + -2x * 2x))
15 + 4x + -4x2 = (15 + -6x + (10x + -4x2))

Combine like terms: -6x + 10x = 4x
15 + 4x + -4x2 = (15 + 4x + -4x2)

Add '-15' to each side of the equation.
15 + 4x + -15 + -4x2 = 15 + 4x + -15 + -4x2

Reorder the terms:
15 + -15 + 4x + -4x2 = 15 + 4x + -15 + -4x2

Combine like terms: 15 + -15 = 0
0 + 4x + -4x2 = 15 + 4x + -15 + -4x2
4x + -4x2 = 15 + 4x + -15 + -4x2

Reorder the terms:
4x + -4x2 = 15 + -15 + 4x + -4x2

Combine like terms: 15 + -15 = 0
4x + -4x2 = 0 + 4x + -4x2
4x + -4x2 = 4x + -4x2

Add '-4x' to each side of the equation.
4x + -4x + -4x2 = 4x + -4x + -4x2

Combine like terms: 4x + -4x = 0
0 + -4x2 = 4x + -4x + -4x2
-4x2 = 4x + -4x + -4x2

Combine like terms: 4x + -4x = 0
-4x2 = 0 + -4x2
-4x2 = -4x2

Add '4x2' to each side of the equation.
-4x2 + 4x2 = -4x2 + 4x2

Combine like terms: -4x2 + 4x2 = 0
0 = -4x2 + 4x2

Combine like terms: -4x2 + 4x2 = 0
0 = 0

Solving
0 = 0

Couldn't find a variable to solve for.

This equation is an identity, all real numbers are solutions.

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