Subtract the polynomials.

(5x^2 −3x − 2) − (−2x^2 − x + 10)

Let's simplify step-by-step.5x2−3x−2−(−2x2−x+10)Distribute the Negative Sign:=5x2−3x−2+−1(−2x2−x+10)=5x2+−3x+−2+−1(−2x2)+−1(−x)+(−1)(10)=5x2+−3x+−2+2x2+x+−10Combine Like Terms:=5x2+−3x+−2+2x2+x+−10=(5x2+2x2)+(−3x+x)+(−2+−10)=7x2+−2x+−12=7x2−2x−12

Multiply 9 and 67. then multiply 3 with 67. lastly the answer that you got for 9x67 is to be subtracted by the answer you got for 3x67