ax^2+bx+c=(2x-3)(x+5)

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Solution for ax^2+bx+c=(2x-3)(x+5) equation:


Simplifying
ax2 + bx + c = (2x + -3)(x + 5)

Reorder the terms:
ax2 + bx + c = (-3 + 2x)(x + 5)

Reorder the terms:
ax2 + bx + c = (-3 + 2x)(5 + x)

Multiply (-3 + 2x) * (5 + x)
ax2 + bx + c = (-3(5 + x) + 2x * (5 + x))
ax2 + bx + c = ((5 * -3 + x * -3) + 2x * (5 + x))
ax2 + bx + c = ((-15 + -3x) + 2x * (5 + x))
ax2 + bx + c = (-15 + -3x + (5 * 2x + x * 2x))
ax2 + bx + c = (-15 + -3x + (10x + 2x2))

Combine like terms: -3x + 10x = 7x
ax2 + bx + c = (-15 + 7x + 2x2)

Solving
ax2 + bx + c = -15 + 7x + 2x2

Solving for variable 'a'.

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

Add '-1bx' to each side of the equation.
ax2 + bx + -1bx + c = -15 + 7x + -1bx + 2x2

Combine like terms: bx + -1bx = 0
ax2 + 0 + c = -15 + 7x + -1bx + 2x2
ax2 + c = -15 + 7x + -1bx + 2x2

Reorder the terms:
ax2 + c = -15 + -1bx + 7x + 2x2

Add '-1c' to each side of the equation.
ax2 + c + -1c = -15 + -1bx + 7x + -1c + 2x2

Combine like terms: c + -1c = 0
ax2 + 0 = -15 + -1bx + 7x + -1c + 2x2
ax2 = -15 + -1bx + 7x + -1c + 2x2

Reorder the terms:
ax2 = -15 + -1bx + -1c + 7x + 2x2

Divide each side by 'x2'.
a = -15x-2 + -1bx-1 + -1cx-2 + 7x-1 + 2

Simplifying
a = -15x-2 + -1bx-1 + -1cx-2 + 7x-1 + 2

Reorder the terms:
a = 2 + -1bx-1 + -1cx-2 + -15x-2 + 7x-1

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