15x^2+5-[5(x^2-7)+9]=

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Solution for 15x^2+5-[5(x^2-7)+9]= equation:


Simplifying
15x2 + 5 + -1[5(x2 + -7) + 9] = 0

Reorder the terms:
15x2 + 5 + -1[5(-7 + x2) + 9] = 0
15x2 + 5 + -1[(-7 * 5 + x2 * 5) + 9] = 0
15x2 + 5 + -1[(-35 + 5x2) + 9] = 0

Reorder the terms:
15x2 + 5 + -1[-35 + 9 + 5x2] = 0

Combine like terms: -35 + 9 = -26
15x2 + 5 + -1[-26 + 5x2] = 0
15x2 + 5 + [-26 * -1 + 5x2 * -1] = 0
15x2 + 5 + [26 + -5x2] = 0

Reorder the terms:
5 + 26 + 15x2 + -5x2 = 0

Combine like terms: 5 + 26 = 31
31 + 15x2 + -5x2 = 0

Combine like terms: 15x2 + -5x2 = 10x2
31 + 10x2 = 0

Solving
31 + 10x2 = 0

Solving for variable 'x'.

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

Add '-31' to each side of the equation.
31 + -31 + 10x2 = 0 + -31

Combine like terms: 31 + -31 = 0
0 + 10x2 = 0 + -31
10x2 = 0 + -31

Combine like terms: 0 + -31 = -31
10x2 = -31

Divide each side by '10'.
x2 = -3.1

Simplifying
x2 = -3.1

Reorder the terms:
3.1 + x2 = -3.1 + 3.1

Combine like terms: -3.1 + 3.1 = 0.0
3.1 + x2 = 0.0

The solution to this equation could not be determined.

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