MATH SOLVE

4 months ago

Q:
# I WILL GIVE BRAINLIEST!!!Which statement justifies that 2x2 + x − 3 multiplied by x2 − 3x − 2 obeys the closure property of multiplication?The result 2x4 − 5x3 − 10x2 + 7x + 6 is a polynomial.The result 2x4 − 5x3 − 10x2 + 7x + 6 has a degree of 4.The result 2x4 − 3x2 + 6 is a trinomial.The result 2x4 − 3x2 + 6 has a degree of 4.

Accepted Solution

A:

(2x^2 + x - 3)(x^2 - 3x - 2)

= 2x^4 - 6x^3 - 4x^2 + x^3 - 3x^2 - 2x -3x^2 + 9x + 6

= 2x^4 - 5x^3 -10x^2 + 7x + 6

The first choice is the correct one

= 2x^4 - 6x^3 - 4x^2 + x^3 - 3x^2 - 2x -3x^2 + 9x + 6

= 2x^4 - 5x^3 -10x^2 + 7x + 6

The first choice is the correct one