(.7x^4-.1x^2-7.7)-(8.4x^2+8.2x+6.4)=

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Solution for (.7x^4-.1x^2-7.7)-(8.4x^2+8.2x+6.4)= equation: 


Simplifying
(0.7x4 + -0.1x2 + -7.7) + -1(8.4x2 + 8.2x + 6.4) = 0

Reorder the terms:
(-7.7 + -0.1x2 + 0.7x4) + -1(8.4x2 + 8.2x + 6.4) = 0

Remove parenthesis around (-7.7 + -0.1x2 + 0.7x4)
-7.7 + -0.1x2 + 0.7x4 + -1(8.4x2 + 8.2x + 6.4) = 0

Reorder the terms:
-7.7 + -0.1x2 + 0.7x4 + -1(6.4 + 8.2x + 8.4x2) = 0
-7.7 + -0.1x2 + 0.7x4 + (6.4 * -1 + 8.2x * -1 + 8.4x2 * -1) = 0
-7.7 + -0.1x2 + 0.7x4 + (-6.4 + -8.2x + -8.4x2) = 0

Reorder the terms:
-7.7 + -6.4 + -8.2x + -0.1x2 + -8.4x2 + 0.7x4 = 0

Combine like terms: -7.7 + -6.4 = -14.1
-14.1 + -8.2x + -0.1x2 + -8.4x2 + 0.7x4 = 0

Combine like terms: -0.1x2 + -8.4x2 = -8.5x2
-14.1 + -8.2x + -8.5x2 + 0.7x4 = 0

Solving
-14.1 + -8.2x + -8.5x2 + 0.7x4 = 0

Solving for variable 'x'.

The solution to this equation could not be determined.

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