Q. Factor as the product of two binomials.x2−3x−10=
Identify quadratic trinomial: Identify the quadratic trinomial and its structure.The given expression is x2−3x−10, which is in the standard form of a quadratic trinomial ax2+bx+c, where a=1, b=−3, and c=−10.
Determine factors of constant term: Determine the factors of the constant term c that add up to the coefficient b.We need to find two numbers that multiply to −10 (the constant term) and add up to −3 (the coefficient of x). The numbers that satisfy these conditions are −5 and +2.
Rewrite middle term: Rewrite the middle term using the numbers found in Step 2.We can express −3x as −5x+2x, which are the terms that come from the factors found in Step 2.So, x2−3x−10 becomes x2−5x+2x−10.
Factor by grouping: Factor by grouping.Group the terms into two pairs: (x2−5x) and (2x−10).Factor out the greatest common factor from each pair.From the first pair, we can factor out an x, giving us x(x−5).From the second pair, we can factor out a 2, giving us 2(x−5).Now we have x(x−5)+2(x−5).
Factor out common binomial factor: Factor out the common binomial factor.The common binomial factor is (x−5).Factor this out to get (x−5)(x+2) as the product of two binomials.