Tony says to multiply 219×3, you multiply 2×3, 1×3 and 9×3, then add the products.. explain tony's error. how would you tony understand how to correctly multiply 219×3

Step-by-step explanation:

Given :

Tony says to multiply 219×3, you multiply 2×3, 1×3 and 9×3, then add the products.

We need to find Tony's error .

We need to help Tony understand how to correctly multiply 219×3 .

In order to multiply 213 by 3, we multiply 3×1 by 3 ( as 3 is at ones place ) then 1×10 by 3 ( as 1 is at tens place ) and then 2× 100 by 3 ( as 2 is at hundreds place )

Then calculate :

d is the answer

step-by-step explanation:

10a^3+277a^2-132a-792

step-by-step explanation:

(2a+11)(5a-12)(foil)

=10a^2-24a+55a-132 =10a^2+31a-132

(10a^2+31a-132)(a+6)

=10a^3+60a^2+31a^2+186a^2-132a-792 =10a^3+277a^2-132a-792

i hope this is what you are looking for : )