In Factoring of Trinomials (Quadratics), follow the five steps listed above.
Step 1: Coefficient of x2 x constant term = 1 x -42 = -42
Step 2: We have to express -42 as two factors whose sum = coefficient of x = 1 ; -42 = -6 x 7; (- 6 + 7 = 1)
Step 3: P = x2 + x - 42 = x2 + 7x - 6x - 42
Step 4: P = x(x + 7) - 6(x + 7)
Step 5: P = (x + 7)(x - 6)
Thus, Applying the Method of Algebra Factoring of Quadratic Polynomial to x2 + x - 42,we get the Factors as (x + 7)(x - 6) Ans.
Exercise on Factoring Trinomial
Problems on Factoring Trinomial :
Factorize 2 + x - 15x2
Factorize x2 + 9x - 136
Factorize x2 + x - 30
Progressive Learning of Math : Factoring Trinomial
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