A^2-21a+90=

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Solution for A^2-21a+90= equation:


Simplifying
A2 + -21a + 90 = 0

Reorder the terms:
90 + A2 + -21a = 0

Solving
90 + A2 + -21a = 0

Solving for variable 'A'.

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

Add '-90' to each side of the equation.
90 + A2 + -90 + -21a = 0 + -90

Reorder the terms:
90 + -90 + A2 + -21a = 0 + -90

Combine like terms: 90 + -90 = 0
0 + A2 + -21a = 0 + -90
A2 + -21a = 0 + -90

Combine like terms: 0 + -90 = -90
A2 + -21a = -90

Add '21a' to each side of the equation.
A2 + -21a + 21a = -90 + 21a

Combine like terms: -21a + 21a = 0
A2 + 0 = -90 + 21a
A2 = -90 + 21a

Simplifying
A2 = -90 + 21a

Reorder the terms:
90 + A2 + -21a = -90 + 21a + 90 + -21a

Reorder the terms:
90 + A2 + -21a = -90 + 90 + 21a + -21a

Combine like terms: -90 + 90 = 0
90 + A2 + -21a = 0 + 21a + -21a
90 + A2 + -21a = 21a + -21a

Combine like terms: 21a + -21a = 0
90 + A2 + -21a = 0

The solution to this equation could not be determined.

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