5x^2-14x+18=-7

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Solution for 5x^2-14x+18=-7 equation:


Simplifying
5x2 + -14x + 18 = -7

Reorder the terms:
18 + -14x + 5x2 = -7

Solving
18 + -14x + 5x2 = -7

Solving for variable 'x'.

Reorder the terms:
18 + 7 + -14x + 5x2 = -7 + 7

Combine like terms: 18 + 7 = 25
25 + -14x + 5x2 = -7 + 7

Combine like terms: -7 + 7 = 0
25 + -14x + 5x2 = 0

Begin completing the square.  Divide all terms by
5 the coefficient of the squared term: 

Divide each side by '5'.
5 + -2.8x + x2 = 0

Move the constant term to the right:

Add '-5' to each side of the equation.
5 + -2.8x + -5 + x2 = 0 + -5

Reorder the terms:
5 + -5 + -2.8x + x2 = 0 + -5

Combine like terms: 5 + -5 = 0
0 + -2.8x + x2 = 0 + -5
-2.8x + x2 = 0 + -5

Combine like terms: 0 + -5 = -5
-2.8x + x2 = -5

The x term is -2.8x.  Take half its coefficient (-1.4).
Square it (1.96) and add it to both sides.

Add '1.96' to each side of the equation.
-2.8x + 1.96 + x2 = -5 + 1.96

Reorder the terms:
1.96 + -2.8x + x2 = -5 + 1.96

Combine like terms: -5 + 1.96 = -3.04
1.96 + -2.8x + x2 = -3.04

Factor a perfect square on the left side:
(x + -1.4)(x + -1.4) = -3.04

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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