(7x-21)(x^2-25)=

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Solution for (7x-21)(x^2-25)= equation: 


Simplifying
(7x + -21)(x2 + -25) = 0

Reorder the terms:
(-21 + 7x)(x2 + -25) = 0

Reorder the terms:
(-21 + 7x)(-25 + x2) = 0

Multiply (-21 + 7x) * (-25 + x2)
(-21(-25 + x2) + 7x * (-25 + x2)) = 0
((-25 * -21 + x2 * -21) + 7x * (-25 + x2)) = 0
((525 + -21x2) + 7x * (-25 + x2)) = 0
(525 + -21x2 + (-25 * 7x + x2 * 7x)) = 0
(525 + -21x2 + (-175x + 7x3)) = 0

Reorder the terms:
(525 + -175x + -21x2 + 7x3) = 0
(525 + -175x + -21x2 + 7x3) = 0

Solving
525 + -175x + -21x2 + 7x3 = 0

Solving for variable 'x'.

Factor out the Greatest Common Factor (GCF), '7'.
7(75 + -25x + -3x2 + x3) = 0

Ignore the factor 7.

Subproblem 1
Set the factor '(75 + -25x + -3x2 + x3)' equal to zero and attempt to solve:

Simplifying
75 + -25x + -3x2 + x3 = 0

Solving
75 + -25x + -3x2 + x3 = 0

The solution to this equation could not be determined.

This subproblem is being ignored because a solution could not be determined.

The solution to this equation could not be determined.

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