Identify Common Factor: Identify the common factor in all terms of the expression.The common factor is (x2−10).
Factor Out Common Factor: Factor out the common factor from each term.x2(x2−10)−5x(x2−10)−14(x2−10)=(x2−10)(x2−5x−14)
Factor Quadratic Expression: Now, factor the quadratic expression x2−5x−14. To factor the quadratic, we look for two numbers that multiply to −14 and add up to −5. These numbers are −7 and +2.
Write Factored Form: Write the factored form of the quadratic expression.(x2−5x−14)=(x−7)(x+2)
Combine Factored Expressions: Combine the factored quadratic with the common factor that was factored out earlier.(x2−10)(x2−5x−14)=(x2−10)(x−7)(x+2)
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