Question

(Picture) MULTIPLYING POLYNOMIALS AND SIMPLIFYING EXPRESSIONS PLEASE HELP!!!!

Answer 1

Answer: Third option is the right answer.

Explanation:

First we the write the expression

`(a+b)(a^(2)+b^(2)-ab)`

Now teacher says that the product of these polynomials will result in the sum of
`a^(3)+b^(3)`

Now the teacher ask if we put the value of a = 2x and b = 1 then what will be the expression look like.

`(2x+1)\left [ (2x)^(2)+(1^(2))-(2x)(1)\right ]`

=
`(2x+1)(4x^(2)+1-2x)`

So third option is looking like our expression.