7x(7x-6)=-18

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Solution for 7x(7x-6)=-18 equation:


Simplifying
7x(7x + -6) = -18

Reorder the terms:
7x(-6 + 7x) = -18
(-6 * 7x + 7x * 7x) = -18
(-42x + 49x2) = -18

Solving
-42x + 49x2 = -18

Solving for variable 'x'.

Reorder the terms:
18 + -42x + 49x2 = -18 + 18

Combine like terms: -18 + 18 = 0
18 + -42x + 49x2 = 0

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

Divide each side by '49'.
0.3673469388 + -0.8571428571x + x2 = 0

Move the constant term to the right:

Add '-0.3673469388' to each side of the equation.
0.3673469388 + -0.8571428571x + -0.3673469388 + x2 = 0 + -0.3673469388

Reorder the terms:
0.3673469388 + -0.3673469388 + -0.8571428571x + x2 = 0 + -0.3673469388

Combine like terms: 0.3673469388 + -0.3673469388 = 0.0000000000
0.0000000000 + -0.8571428571x + x2 = 0 + -0.3673469388
-0.8571428571x + x2 = 0 + -0.3673469388

Combine like terms: 0 + -0.3673469388 = -0.3673469388
-0.8571428571x + x2 = -0.3673469388

The x term is -0.8571428571x.  Take half its coefficient (-0.4285714286).
Square it (0.1836734694) and add it to both sides.

Add '0.1836734694' to each side of the equation.
-0.8571428571x + 0.1836734694 + x2 = -0.3673469388 + 0.1836734694

Reorder the terms:
0.1836734694 + -0.8571428571x + x2 = -0.3673469388 + 0.1836734694

Combine like terms: -0.3673469388 + 0.1836734694 = -0.1836734694
0.1836734694 + -0.8571428571x + x2 = -0.1836734694

Factor a perfect square on the left side:
(x + -0.4285714286)(x + -0.4285714286) = -0.1836734694

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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