Question

answer this question...​

Answer 1

Answer:

4a*6-9*10

Step-by-step explanation:

hope it helps you

Answer 2

Answer:

Just multiply by taking first term then second term

Step-by-step explanation:

$2a^{3} ( 2a^{3} + 3b^{5} ) - 3b^{2} (2a^{3} + 3b^{5})\\2a^{3} * 2a^{3} + 2a^{3} * 3b^{5} - 3b^{2} (2a^{3} + 3b^{5})$

We will open 1 bracket a time to avoid mess

Note same variable i.e., (a) or (b) will add power according to rule so

$a^{3} * a^{3}\\a^{3+3}$

$4a^{6} + 6a^{3}b^{5} - 3b^{2} * 2a^{3} - 3b^{2} * 3b^{5} \\4a^{6} + 6a^{3}b^{5} - 6b^{2}a^{3} - 9b^{5+2}\\4a^{6} + 6a^{3}b^{5} - 6b^{2}a^{3} - 9b^{7}$