(3a+7b)(9a^2-21ab+49b^2)=0

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Solution for (3a+7b)(9a^2-21ab+49b^2)=0 equation:


Simplifying
(3a + 7b)(9a2 + -21ab + 49b2) = 0

Reorder the terms:
(3a + 7b)(-21ab + 9a2 + 49b2) = 0

Multiply (3a + 7b) * (-21ab + 9a2 + 49b2)
(3a * (-21ab + 9a2 + 49b2) + 7b * (-21ab + 9a2 + 49b2)) = 0
((-21ab * 3a + 9a2 * 3a + 49b2 * 3a) + 7b * (-21ab + 9a2 + 49b2)) = 0

Reorder the terms:
((147ab2 + -63a2b + 27a3) + 7b * (-21ab + 9a2 + 49b2)) = 0
((147ab2 + -63a2b + 27a3) + 7b * (-21ab + 9a2 + 49b2)) = 0
(147ab2 + -63a2b + 27a3 + (-21ab * 7b + 9a2 * 7b + 49b2 * 7b)) = 0
(147ab2 + -63a2b + 27a3 + (-147ab2 + 63a2b + 343b3)) = 0

Reorder the terms:
(147ab2 + -147ab2 + -63a2b + 63a2b + 27a3 + 343b3) = 0

Combine like terms: 147ab2 + -147ab2 = 0
(0 + -63a2b + 63a2b + 27a3 + 343b3) = 0
(-63a2b + 63a2b + 27a3 + 343b3) = 0

Combine like terms: -63a2b + 63a2b = 0
(0 + 27a3 + 343b3) = 0
(27a3 + 343b3) = 0

Solving
27a3 + 343b3 = 0

Solving for variable 'a'.

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

Add '-343b3' to each side of the equation.
27a3 + 343b3 + -343b3 = 0 + -343b3

Combine like terms: 343b3 + -343b3 = 0
27a3 + 0 = 0 + -343b3
27a3 = 0 + -343b3
Remove the zero:
27a3 = -343b3

Divide each side by '27'.
a3 = -12.7037037b3

Simplifying
a3 = -12.7037037b3

Combine like terms: -12.7037037b3 + 12.7037037b3 = 0.0000000
a3 + 12.7037037b3 = 0.0000000

The solution to this equation could not be determined.

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