(a-2)(a-2)=-5

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Solution for (a-2)(a-2)=-5 equation:


Simplifying
(a + -2)(a + -2) = -5

Reorder the terms:
(-2 + a)(a + -2) = -5

Reorder the terms:
(-2 + a)(-2 + a) = -5

Multiply (-2 + a) * (-2 + a)
(-2(-2 + a) + a(-2 + a)) = -5
((-2 * -2 + a * -2) + a(-2 + a)) = -5
((4 + -2a) + a(-2 + a)) = -5
(4 + -2a + (-2 * a + a * a)) = -5
(4 + -2a + (-2a + a2)) = -5

Combine like terms: -2a + -2a = -4a
(4 + -4a + a2) = -5

Solving
4 + -4a + a2 = -5

Solving for variable 'a'.

Reorder the terms:
4 + 5 + -4a + a2 = -5 + 5

Combine like terms: 4 + 5 = 9
9 + -4a + a2 = -5 + 5

Combine like terms: -5 + 5 = 0
9 + -4a + a2 = 0

Begin completing the square.

Move the constant term to the right:

Add '-9' to each side of the equation.
9 + -4a + -9 + a2 = 0 + -9

Reorder the terms:
9 + -9 + -4a + a2 = 0 + -9

Combine like terms: 9 + -9 = 0
0 + -4a + a2 = 0 + -9
-4a + a2 = 0 + -9

Combine like terms: 0 + -9 = -9
-4a + a2 = -9

The a term is -4a.  Take half its coefficient (-2).
Square it (4) and add it to both sides.

Add '4' to each side of the equation.
-4a + 4 + a2 = -9 + 4

Reorder the terms:
4 + -4a + a2 = -9 + 4

Combine like terms: -9 + 4 = -5
4 + -4a + a2 = -5

Factor a perfect square on the left side:
(a + -2)(a + -2) = -5

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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