(3x+7)(3x^2-25x+42)=0

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Solution for (3x+7)(3x^2-25x+42)=0 equation: 


Simplifying
(3x + 7)(3x2 + -25x + 42) = 0

Reorder the terms:
(7 + 3x)(3x2 + -25x + 42) = 0

Reorder the terms:
(7 + 3x)(42 + -25x + 3x2) = 0

Multiply (7 + 3x) * (42 + -25x + 3x2)
(7(42 + -25x + 3x2) + 3x * (42 + -25x + 3x2)) = 0
((42 * 7 + -25x * 7 + 3x2 * 7) + 3x * (42 + -25x + 3x2)) = 0
((294 + -175x + 21x2) + 3x * (42 + -25x + 3x2)) = 0
(294 + -175x + 21x2 + (42 * 3x + -25x * 3x + 3x2 * 3x)) = 0
(294 + -175x + 21x2 + (126x + -75x2 + 9x3)) = 0

Reorder the terms:
(294 + -175x + 126x + 21x2 + -75x2 + 9x3) = 0

Combine like terms: -175x + 126x = -49x
(294 + -49x + 21x2 + -75x2 + 9x3) = 0

Combine like terms: 21x2 + -75x2 = -54x2
(294 + -49x + -54x2 + 9x3) = 0

Solving
294 + -49x + -54x2 + 9x3 = 0

Solving for variable 'x'.

The solution to this equation could not be determined.

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