Question

Multiply a3 + 2a2 - 3a -1 by 1 - 2a2 + a. Check the result by
putting a = 1

(the number that is put after the variable is the power of the variable)
please solve this question quickly.​

Answer 1

Answer:

a³+2a²-3a-1

(1)³+2(1)²-3(1)-1

1+2-3-1

3-2

1

and 1-2a²+a

1-2(1)²+(1)

1-2+1

0