X^2+8x+4=-21

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Solution for X^2+8x+4=-21 equation:


Simplifying
X2 + 8x + 4 = -21

Reorder the terms:
4 + X2 + 8x = -21

Solving
4 + X2 + 8x = -21

Solving for variable 'X'.

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

Add '-4' to each side of the equation.
4 + X2 + -4 + 8x = -21 + -4

Reorder the terms:
4 + -4 + X2 + 8x = -21 + -4

Combine like terms: 4 + -4 = 0
0 + X2 + 8x = -21 + -4
X2 + 8x = -21 + -4

Combine like terms: -21 + -4 = -25
X2 + 8x = -25

Add '-8x' to each side of the equation.
X2 + 8x + -8x = -25 + -8x

Combine like terms: 8x + -8x = 0
X2 + 0 = -25 + -8x
X2 = -25 + -8x

Simplifying
X2 = -25 + -8x

Reorder the terms:
25 + X2 + 8x = -25 + -8x + 25 + 8x

Reorder the terms:
25 + X2 + 8x = -25 + 25 + -8x + 8x

Combine like terms: -25 + 25 = 0
25 + X2 + 8x = 0 + -8x + 8x
25 + X2 + 8x = -8x + 8x

Combine like terms: -8x + 8x = 0
25 + X2 + 8x = 0

The solution to this equation could not be determined.

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