Question

15x2 + 22x + 8 = Factor by grouping

Answer 1

Answer:

(5x + 4)(3x+2)

Step-by-step explanation:

15x² + 22x + 8

First, you find two, when added equals 22 and when multiplied together equals 15*8

You then replace 22x with the two numbers

15x² + 10x + 12x + 8

You then group the above expression in 2s

(15x²+10x) + (12x + 8)

Find common factors in each group

5x(3x + 2) + 4(3x + 2)

(5x + 4)(3x+2)