(z+7)(z-7)(z-8)=0

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Solution for (z+7)(z-7)(z-8)=0 equation:


Simplifying
(z + 7)(z + -7)(z + -8) = 0

Reorder the terms:
(7 + z)(z + -7)(z + -8) = 0

Reorder the terms:
(7 + z)(-7 + z)(z + -8) = 0

Reorder the terms:
(7 + z)(-7 + z)(-8 + z) = 0

Multiply (7 + z) * (-7 + z)
(7(-7 + z) + z(-7 + z))(-8 + z) = 0
((-7 * 7 + z * 7) + z(-7 + z))(-8 + z) = 0
((-49 + 7z) + z(-7 + z))(-8 + z) = 0
(-49 + 7z + (-7 * z + z * z))(-8 + z) = 0
(-49 + 7z + (-7z + z2))(-8 + z) = 0

Combine like terms: 7z + -7z = 0
(-49 + 0 + z2)(-8 + z) = 0
(-49 + z2)(-8 + z) = 0

Multiply (-49 + z2) * (-8 + z)
(-49(-8 + z) + z2(-8 + z)) = 0
((-8 * -49 + z * -49) + z2(-8 + z)) = 0
((392 + -49z) + z2(-8 + z)) = 0
(392 + -49z + (-8 * z2 + z * z2)) = 0
(392 + -49z + (-8z2 + z3)) = 0
(392 + -49z + -8z2 + z3) = 0

Solving
392 + -49z + -8z2 + z3 = 0

Solving for variable 'z'.

The solution to this equation could not be determined.

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