a(a+4)=(a-6)(a-5)

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Solution for a(a+4)=(a-6)(a-5) equation:


Simplifying
a(a + 4) = (a + -6)(a + -5)

Reorder the terms:
a(4 + a) = (a + -6)(a + -5)
(4 * a + a * a) = (a + -6)(a + -5)
(4a + a2) = (a + -6)(a + -5)

Reorder the terms:
4a + a2 = (-6 + a)(a + -5)

Reorder the terms:
4a + a2 = (-6 + a)(-5 + a)

Multiply (-6 + a) * (-5 + a)
4a + a2 = (-6(-5 + a) + a(-5 + a))
4a + a2 = ((-5 * -6 + a * -6) + a(-5 + a))
4a + a2 = ((30 + -6a) + a(-5 + a))
4a + a2 = (30 + -6a + (-5 * a + a * a))
4a + a2 = (30 + -6a + (-5a + a2))

Combine like terms: -6a + -5a = -11a
4a + a2 = (30 + -11a + a2)

Add '-1a2' to each side of the equation.
4a + a2 + -1a2 = 30 + -11a + a2 + -1a2

Combine like terms: a2 + -1a2 = 0
4a + 0 = 30 + -11a + a2 + -1a2
4a = 30 + -11a + a2 + -1a2

Combine like terms: a2 + -1a2 = 0
4a = 30 + -11a + 0
4a = 30 + -11a

Solving
4a = 30 + -11a

Solving for variable 'a'.

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

Add '11a' to each side of the equation.
4a + 11a = 30 + -11a + 11a

Combine like terms: 4a + 11a = 15a
15a = 30 + -11a + 11a

Combine like terms: -11a + 11a = 0
15a = 30 + 0
15a = 30

Divide each side by '15'.
a = 2

Simplifying
a = 2

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