(a-5)(a+7)=o

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Solution for (a-5)(a+7)=o equation: 


Simplifying
(a + -5)(a + 7) = o

Reorder the terms:
(-5 + a)(a + 7) = o

Reorder the terms:
(-5 + a)(7 + a) = o

Multiply (-5 + a) * (7 + a)
(-5(7 + a) + a(7 + a)) = o
((7 * -5 + a * -5) + a(7 + a)) = o
((-35 + -5a) + a(7 + a)) = o
(-35 + -5a + (7 * a + a * a)) = o
(-35 + -5a + (7a + a2)) = o

Combine like terms: -5a + 7a = 2a
(-35 + 2a + a2) = o

Solving
-35 + 2a + a2 = o

Solving for variable 'a'.

Combine like terms: o + -1o = 0
-35 + 2a + a2 + -1o = 0

The solution to this equation could not be determined.

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