Xsquared-4x-21=0

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Solution for Xsquared-4x-21=0 equation:


Simplifying
Xsquared + -4x + -21 = 0

Reorder the terms:
-21 + adeqrsuX + -4x = 0

Solving
-21 + adeqrsuX + -4x = 0

Solving for variable 'a'.

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

Add '21' to each side of the equation.
-21 + adeqrsuX + 21 + -4x = 0 + 21

Reorder the terms:
-21 + 21 + adeqrsuX + -4x = 0 + 21

Combine like terms: -21 + 21 = 0
0 + adeqrsuX + -4x = 0 + 21
adeqrsuX + -4x = 0 + 21

Combine like terms: 0 + 21 = 21
adeqrsuX + -4x = 21

Add '4x' to each side of the equation.
adeqrsuX + -4x + 4x = 21 + 4x

Combine like terms: -4x + 4x = 0
adeqrsuX + 0 = 21 + 4x
adeqrsuX = 21 + 4x

Divide each side by 'deqrsuX'.
a = 21d-1e-1q-1r-1s-1u-1X-1 + 4d-1e-1q-1r-1s-1u-1xX-1

Simplifying
a = 21d-1e-1q-1r-1s-1u-1X-1 + 4d-1e-1q-1r-1s-1u-1xX-1

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