18x^2+5-[3(x^2-3)+7]=

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Solution for 18x^2+5-[3(x^2-3)+7]= equation:


Simplifying
18x2 + 5 + -1[3(x2 + -3) + 7] = 0

Reorder the terms:
18x2 + 5 + -1[3(-3 + x2) + 7] = 0
18x2 + 5 + -1[(-3 * 3 + x2 * 3) + 7] = 0
18x2 + 5 + -1[(-9 + 3x2) + 7] = 0

Reorder the terms:
18x2 + 5 + -1[-9 + 7 + 3x2] = 0

Combine like terms: -9 + 7 = -2
18x2 + 5 + -1[-2 + 3x2] = 0
18x2 + 5 + [-2 * -1 + 3x2 * -1] = 0
18x2 + 5 + [2 + -3x2] = 0

Reorder the terms:
5 + 2 + 18x2 + -3x2 = 0

Combine like terms: 5 + 2 = 7
7 + 18x2 + -3x2 = 0

Combine like terms: 18x2 + -3x2 = 15x2
7 + 15x2 = 0

Solving
7 + 15x2 = 0

Solving for variable 'x'.

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

Add '-7' to each side of the equation.
7 + -7 + 15x2 = 0 + -7

Combine like terms: 7 + -7 = 0
0 + 15x2 = 0 + -7
15x2 = 0 + -7

Combine like terms: 0 + -7 = -7
15x2 = -7

Divide each side by '15'.
x2 = -0.4666666667

Simplifying
x2 = -0.4666666667

Reorder the terms:
0.4666666667 + x2 = -0.4666666667 + 0.4666666667

Combine like terms: -0.4666666667 + 0.4666666667 = 0.0000000000
0.4666666667 + x2 = 0.0000000000

The solution to this equation could not be determined.

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