Identify Common Factor: Identify the common factor in all three terms of the expression x2(5x2−6)−9x(5x2−6)−10(5x2−6). The common factor is (5x2−6).
Factor Out Common Factor: Factor out the common factor (5x2−6) from each term.The expression becomes (5x2−6)(x2−9x−10).
Factor Quadratic Expression: Now, factor the quadratic expression x2−9x−10. This is a simple trinomial factoring problem. We look for two numbers that multiply to −10 and add up to −9. These numbers are −10 and +1. The factored form of x2−9x−10 is (x−10)(x+1).
Combine Factored Expressions: Combine the factored quadratic with the common factor that was factored out earlier.The completely factored form of the original expression is (5x2−6)(x−10)(x+1).
More problems from Composition of linear and quadratic functions: find a value