13x^2+7-[7(x^2-6)+9]=

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Solution for 13x^2+7-[7(x^2-6)+9]= equation:


Simplifying
13x2 + 7 + -1[7(x2 + -6) + 9] = 0

Reorder the terms:
13x2 + 7 + -1[7(-6 + x2) + 9] = 0
13x2 + 7 + -1[(-6 * 7 + x2 * 7) + 9] = 0
13x2 + 7 + -1[(-42 + 7x2) + 9] = 0

Reorder the terms:
13x2 + 7 + -1[-42 + 9 + 7x2] = 0

Combine like terms: -42 + 9 = -33
13x2 + 7 + -1[-33 + 7x2] = 0
13x2 + 7 + [-33 * -1 + 7x2 * -1] = 0
13x2 + 7 + [33 + -7x2] = 0

Reorder the terms:
7 + 33 + 13x2 + -7x2 = 0

Combine like terms: 7 + 33 = 40
40 + 13x2 + -7x2 = 0

Combine like terms: 13x2 + -7x2 = 6x2
40 + 6x2 = 0

Solving
40 + 6x2 = 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 + -40 + 6x2 = 0 + -40

Combine like terms: 40 + -40 = 0
0 + 6x2 = 0 + -40
6x2 = 0 + -40

Combine like terms: 0 + -40 = -40
6x2 = -40

Divide each side by '6'.
x2 = -6.666666667

Simplifying
x2 = -6.666666667

Reorder the terms:
6.666666667 + x2 = -6.666666667 + 6.666666667

Combine like terms: -6.666666667 + 6.666666667 = 0.000000000
6.666666667 + x2 = 0.000000000

The solution to this equation could not be determined.

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