x^2+7X+40=0

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Solution for x^2+7X+40=0 equation: 


Simplifying
x2 + 7X + 40 = 0

Reorder the terms:
40 + 7X + x2 = 0

Solving
40 + 7X + x2 = 0

Solving for variable 'X'.

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

Add '-40' to each side of the equation.
40 + 7X + -40 + x2 = 0 + -40

Reorder the terms:
40 + -40 + 7X + x2 = 0 + -40

Combine like terms: 40 + -40 = 0
0 + 7X + x2 = 0 + -40
7X + x2 = 0 + -40

Combine like terms: 0 + -40 = -40
7X + x2 = -40

Add '-1x2' to each side of the equation.
7X + x2 + -1x2 = -40 + -1x2

Combine like terms: x2 + -1x2 = 0
7X + 0 = -40 + -1x2
7X = -40 + -1x2

Divide each side by '7'.
X = -5.714285714 + -0.1428571429x2

Simplifying
X = -5.714285714 + -0.1428571429x2

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