Question

find the product. 1-5 ​

Answer 1

Answer:

1. 30r^6-15^5

2. 7x^3-21x^2

3. 42n^2+6n-12

4. 2n^2+15-5n

5. 32b^3+60b^2+55b+6

Step-by-step explanation:

1. 5r^5(6r-3)

=(5x6)r^5+1 -(5x3)r^5

30r^6 -15r^5

2. 7x^2(x-3)

=7x^3 -21x^2

3. 6(7n^2+n-2)

=42n^2+6n-12

4. (2n-5)(n-5)

=2n(n-5)-5(n-5)

=2n^2-10-5n+25

=2n^2+15-5n

5. (4b^2+7b+6)(8b+1)

=8b(4b^2+7b+6)+1(4b^2+7b+6)

=32b^3+56b^2+48b+4b^2+7b+6

=32b^3+60b^2+55b+6