Question

Subtract the polynomials

(3x² + 2x − 5) – (4x² – 3x − 4)


A:-7x²+5x-9

B:7x²-x-9

C:x²-x-9

D:-x²+5x-1

please helpppp asap​

Answer 1

-x² + 5x - 1

Explanation:

separate the x², the x, and the constants (numbers without any x).

3x² - 4x² = -x²

2x - -3x = 2x + 3x = 5x

-5 - -4 = -5 + 4 = -1.

we have -x² + 5x - 1