Factor x3 – 4x2 + 7x – 28 by grouping. what is the resulting expression? (x2 – 4)(x + 7) (x2 + 4)(x – 7) (x2 – 7)(x + 4) wrong answer (x2 + 7)(x – 4)

(x² + 7)(x – 4)

Step-by-step explanation:

To factor by grouping, we group together the first two terms and the last two terms in parentheses:

(x³ - 4x²) + (7x - 28)

Factor out the GCF of each group.  For the first group, the largest factor is x²:

x²(x-4) + (7x-28)

The GCF of the second group is 7:

x²(x-4) + 7(x-4)

The GCF of the two groups is now x-4:

(x-4)(x²+7)

ur mom

step-by-step explanation:

y -5 = (-1/4)(x + 8)

step-by-step explanation: