subtract polynomials

Question

Subtract: (-5X²-4X+3)-(-9X²+8X-6)

Answer 1

(-5X2-4X+3)-(-9X2+8X-6)

 

-5X²-4X+3- +9X² - 8X + 6 after distributing the minus (for subtraction), which reversed the sign of everything inside the second set of parentheses.

 

NOW all YOU HAVE TO DO IS COMBINE "LIKE" TERMS.