(4x^2+4x-21)(x+3)=0

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Solution for (4x^2+4x-21)(x+3)=0 equation: 


Simplifying
(4x2 + 4x + -21)(x + 3) = 0

Reorder the terms:
(-21 + 4x + 4x2)(x + 3) = 0

Reorder the terms:
(-21 + 4x + 4x2)(3 + x) = 0

Multiply (-21 + 4x + 4x2) * (3 + x)
(-21(3 + x) + 4x * (3 + x) + 4x2 * (3 + x)) = 0
((3 * -21 + x * -21) + 4x * (3 + x) + 4x2 * (3 + x)) = 0
((-63 + -21x) + 4x * (3 + x) + 4x2 * (3 + x)) = 0
(-63 + -21x + (3 * 4x + x * 4x) + 4x2 * (3 + x)) = 0
(-63 + -21x + (12x + 4x2) + 4x2 * (3 + x)) = 0
(-63 + -21x + 12x + 4x2 + (3 * 4x2 + x * 4x2)) = 0
(-63 + -21x + 12x + 4x2 + (12x2 + 4x3)) = 0

Combine like terms: -21x + 12x = -9x
(-63 + -9x + 4x2 + 12x2 + 4x3) = 0

Combine like terms: 4x2 + 12x2 = 16x2
(-63 + -9x + 16x2 + 4x3) = 0

Solving
-63 + -9x + 16x2 + 4x3 = 0

Solving for variable 'x'.

The solution to this equation could not be determined.

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