Sunday
March 26, 2017

Post a New Question

Posted by on .

All the directions say for these three problems is multiply and simplify. Are my answers correct? Thank you

A)(x^2+2x-3)+(2x^2-x+1)
Answer: 2x^3-6x^2+4x

B)(x+1)(2x-1)
Answer: 3x-1

C)(x-2)(x^2+2x-3)
Answer: x^3-7x+6

  • Math Check - ,

    A) You have a plus sign in the first one so it is add, not multiply. It is wrong anyway for adding or multiplying.

    B) One way to do these is to split them up using the distributive property
    (x+1)(2x-1) = x(2x-1) + 1 (2x-1)
    = 2 x^2 - x + 2x - 1
    = 2 x^2 + 1x - 1

    C) x(x^2+2x-3) -2(x^2+2x-3)
    x^3 +2x^2 -3x -2x^2 -4x +6
    = x^3 -7x +6

  • Math Check - ,

    Srry the problem for a is suppose to be 2x(x^2-3x+2) this is my answer
    2x^3-6x^2+4x

  • Math Check - ,

    yes

Answer This Question

First Name:
School Subject:
Answer:

Related Questions

More Related Questions

Post a New Question