(-8n^2-n+7)(5n+4)=

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Solution for (-8n^2-n+7)(5n+4)= equation: 


Simplifying
(-8n2 + -1n + 7)(5n + 4) = 0

Reorder the terms:
(7 + -1n + -8n2)(5n + 4) = 0

Reorder the terms:
(7 + -1n + -8n2)(4 + 5n) = 0

Multiply (7 + -1n + -8n2) * (4 + 5n)
(7(4 + 5n) + -1n * (4 + 5n) + -8n2 * (4 + 5n)) = 0
((4 * 7 + 5n * 7) + -1n * (4 + 5n) + -8n2 * (4 + 5n)) = 0
((28 + 35n) + -1n * (4 + 5n) + -8n2 * (4 + 5n)) = 0
(28 + 35n + (4 * -1n + 5n * -1n) + -8n2 * (4 + 5n)) = 0
(28 + 35n + (-4n + -5n2) + -8n2 * (4 + 5n)) = 0
(28 + 35n + -4n + -5n2 + (4 * -8n2 + 5n * -8n2)) = 0
(28 + 35n + -4n + -5n2 + (-32n2 + -40n3)) = 0

Combine like terms: 35n + -4n = 31n
(28 + 31n + -5n2 + -32n2 + -40n3) = 0

Combine like terms: -5n2 + -32n2 = -37n2
(28 + 31n + -37n2 + -40n3) = 0

Solving
28 + 31n + -37n2 + -40n3 = 0

Solving for variable 'n'.

The solution to this equation could not be determined.

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