15x^2+2x^2=(x+3)(x-3)

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Solution for 15x^2+2x^2=(x+3)(x-3) equation:


Simplifying
15x2 + 2x2 = (x + 3)(x + -3)

Combine like terms: 15x2 + 2x2 = 17x2
17x2 = (x + 3)(x + -3)

Reorder the terms:
17x2 = (3 + x)(x + -3)

Reorder the terms:
17x2 = (3 + x)(-3 + x)

Multiply (3 + x) * (-3 + x)
17x2 = (3(-3 + x) + x(-3 + x))
17x2 = ((-3 * 3 + x * 3) + x(-3 + x))
17x2 = ((-9 + 3x) + x(-3 + x))
17x2 = (-9 + 3x + (-3 * x + x * x))
17x2 = (-9 + 3x + (-3x + x2))

Combine like terms: 3x + -3x = 0
17x2 = (-9 + 0 + x2)
17x2 = (-9 + x2)

Solving
17x2 = -9 + x2

Solving for variable 'x'.

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

Add '-1x2' to each side of the equation.
17x2 + -1x2 = -9 + x2 + -1x2

Combine like terms: 17x2 + -1x2 = 16x2
16x2 = -9 + x2 + -1x2

Combine like terms: x2 + -1x2 = 0
16x2 = -9 + 0
16x2 = -9

Divide each side by '16'.
x2 = -0.5625

Simplifying
x2 = -0.5625

Reorder the terms:
0.5625 + x2 = -0.5625 + 0.5625

Combine like terms: -0.5625 + 0.5625 = 0.0000
0.5625 + x2 = 0.0000

The solution to this equation could not be determined.

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