x^2+6(2x+5)-7x=

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Solution for x^2+6(2x+5)-7x= equation:


Simplifying
x2 + 6(2x + 5) + -7x = 0

Reorder the terms:
x2 + 6(5 + 2x) + -7x = 0
x2 + (5 * 6 + 2x * 6) + -7x = 0
x2 + (30 + 12x) + -7x = 0

Reorder the terms:
30 + 12x + -7x + x2 = 0

Combine like terms: 12x + -7x = 5x
30 + 5x + x2 = 0

Solving
30 + 5x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '-30' to each side of the equation.
30 + 5x + -30 + x2 = 0 + -30

Reorder the terms:
30 + -30 + 5x + x2 = 0 + -30

Combine like terms: 30 + -30 = 0
0 + 5x + x2 = 0 + -30
5x + x2 = 0 + -30

Combine like terms: 0 + -30 = -30
5x + x2 = -30

The x term is 5x.  Take half its coefficient (2.5).
Square it (6.25) and add it to both sides.

Add '6.25' to each side of the equation.
5x + 6.25 + x2 = -30 + 6.25

Reorder the terms:
6.25 + 5x + x2 = -30 + 6.25

Combine like terms: -30 + 6.25 = -23.75
6.25 + 5x + x2 = -23.75

Factor a perfect square on the left side:
(x + 2.5)(x + 2.5) = -23.75

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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