X^2+8x+21=3

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Solution for X^2+8x+21=3 equation:


Simplifying
X2 + 8x + 21 = 3

Reorder the terms:
21 + X2 + 8x = 3

Solving
21 + X2 + 8x = 3

Solving for variable 'X'.

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

Add '-21' to each side of the equation.
21 + X2 + -21 + 8x = 3 + -21

Reorder the terms:
21 + -21 + X2 + 8x = 3 + -21

Combine like terms: 21 + -21 = 0
0 + X2 + 8x = 3 + -21
X2 + 8x = 3 + -21

Combine like terms: 3 + -21 = -18
X2 + 8x = -18

Add '-8x' to each side of the equation.
X2 + 8x + -8x = -18 + -8x

Combine like terms: 8x + -8x = 0
X2 + 0 = -18 + -8x
X2 = -18 + -8x

Simplifying
X2 = -18 + -8x

Reorder the terms:
18 + X2 + 8x = -18 + -8x + 18 + 8x

Reorder the terms:
18 + X2 + 8x = -18 + 18 + -8x + 8x

Combine like terms: -18 + 18 = 0
18 + X2 + 8x = 0 + -8x + 8x
18 + X2 + 8x = -8x + 8x

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

The solution to this equation could not be determined.

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