x=(a-7)(a+7)

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Solution for x=(a-7)(a+7) equation:


Simplifying
x = (a + -7)(a + 7)

Reorder the terms:
x = (-7 + a)(a + 7)

Reorder the terms:
x = (-7 + a)(7 + a)

Multiply (-7 + a) * (7 + a)
x = (-7(7 + a) + a(7 + a))
x = ((7 * -7 + a * -7) + a(7 + a))
x = ((-49 + -7a) + a(7 + a))
x = (-49 + -7a + (7 * a + a * a))
x = (-49 + -7a + (7a + a2))

Combine like terms: -7a + 7a = 0
x = (-49 + 0 + a2)
x = (-49 + a2)

Solving
x = -49 + a2

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Simplifying
x = -49 + a2

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