Question

(1.5a-4b)(1.5a+4b+3)-4.5a+12b​

Answer 1

Answer:

2.25a²-16b²+10ab-4b

Step-by-step explanation:

1.5a(1.5a+4b+3)-4b(1.5a+4b+4)-4.5a+12b

2.25a²+6ab+4.5a-(6ab+16b²+16b)-4.5a+12b.

2.25a²+16ab+4.5a-6ab-16b²-16b-4.5a+12b

2.25a²-16b²+16ab-6ab+4.5a-4.5a-16b+12b

2.25a²-16b²+10ab-4b