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Simplifying f(x) = (2x + 3)(x + -5) Multiply f * x fx = (2x + 3)(x + -5) Reorder the terms: fx = (3 + 2x)(x + -5) Reorder the terms: fx = (3 + 2x)(-5 + x) Multiply (3 + 2x) * (-5 + x) fx = (3(-5 + x) + 2x * (-5 + x)) fx = ((-5 * 3 + x * 3) + 2x * (-5 + x)) fx = ((-15 + 3x) + 2x * (-5 + x)) fx = (-15 + 3x + (-5 * 2x + x * 2x)) fx = (-15 + 3x + (-10x + 2x2)) Combine like terms: 3x + -10x = -7x fx = (-15 + -7x + 2x2) Solving fx = -15 + -7x + 2x2 Solving for variable 'f'. Move all terms containing f to the left, all other terms to the right. Divide each side by 'x'. f = -15x-1 + -7 + 2x Simplifying f = -15x-1 + -7 + 2x Reorder the terms: f = -7 + -15x-1 + 2x
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