(x^2-7)(x^2-8.5x+4)=0

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Solution for (x^2-7)(x^2-8.5x+4)=0 equation: 


Simplifying
(x2 + -7)(x2 + -8.5x + 4) = 0

Reorder the terms:
(-7 + x2)(x2 + -8.5x + 4) = 0

Reorder the terms:
(-7 + x2)(4 + -8.5x + x2) = 0

Multiply (-7 + x2) * (4 + -8.5x + x2)
(-7(4 + -8.5x + x2) + x2(4 + -8.5x + x2)) = 0
((4 * -7 + -8.5x * -7 + x2 * -7) + x2(4 + -8.5x + x2)) = 0
((-28 + 59.5x + -7x2) + x2(4 + -8.5x + x2)) = 0
(-28 + 59.5x + -7x2 + (4 * x2 + -8.5x * x2 + x2 * x2)) = 0
(-28 + 59.5x + -7x2 + (4x2 + -8.5x3 + x4)) = 0

Combine like terms: -7x2 + 4x2 = -3x2
(-28 + 59.5x + -3x2 + -8.5x3 + x4) = 0

Solving
-28 + 59.5x + -3x2 + -8.5x3 + x4 = 0

Solving for variable 'x'.

The solution to this equation could not be determined.

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