Which of the following represents the factors of the expression x²  3x  40 ?
A.) (x  8)(x + 5) B.) (x  7)(x + 4) C.) (x + 10)(x  4) D.) (x + 6)(x  9)
Factor the quadratic expression into two binomials.
The first terms of the two binomials are factors of x²......x and x The second terms of the two binomials will multiply to get the constant term, 40, and add to get the middle coefficient, 3 x²  3x  40 = (x  8)(x + 5) {factored into two binomials} More examples, like this, can be found here. Ask Algebra House Comments are closed.

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