Question

Subtract the following polynomials, then place the answer in the proper location on the grid. Write answer in descending powers of x. Subtract: 3x 2 -7x + 4 from 5x 2 - 3x + 8.

Answer 1

2x^2 +4x +4

Explanation:

Subtract: 3x 2 -7x + 4 from 5x 2 - 3x + 8.

5x^2 -3x+8 - (3x^2 -7x+4)

To subtract the second polynomial we multiply negative sign inside the second parenthesis.

Change the sign of each term when we multiply negative inside second parenthesis.

5x^2 -3x+8 - 3x^2 +7x-4

Now combine like terms

2x^2 +4x +4