X(X+8)=-340

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Solution for X(X+8)=-340 equation:


Simplifying
X(X + 8) = -340

Reorder the terms:
X(8 + X) = -340
(8 * X + X * X) = -340
(8X + X2) = -340

Solving
8X + X2 = -340

Solving for variable 'X'.

Reorder the terms:
340 + 8X + X2 = -340 + 340

Combine like terms: -340 + 340 = 0
340 + 8X + X2 = 0

Begin completing the square.

Move the constant term to the right:

Add '-340' to each side of the equation.
340 + 8X + -340 + X2 = 0 + -340

Reorder the terms:
340 + -340 + 8X + X2 = 0 + -340

Combine like terms: 340 + -340 = 0
0 + 8X + X2 = 0 + -340
8X + X2 = 0 + -340

Combine like terms: 0 + -340 = -340
8X + X2 = -340

The X term is 8X.  Take half its coefficient (4).
Square it (16) and add it to both sides.

Add '16' to each side of the equation.
8X + 16 + X2 = -340 + 16

Reorder the terms:
16 + 8X + X2 = -340 + 16

Combine like terms: -340 + 16 = -324
16 + 8X + X2 = -324

Factor a perfect square on the left side:
(X + 4)(X + 4) = -324

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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