Sagot :
to subtract rational algebraic expresaion , first look at the sign numbers then proceed to the rule of adding rational algebraic expression
ex.8x²+12x+20 first is the lower is change the sign of the constant after that add it.
- 5x²-8x+12 = 8x²+12x+20
(+) -5x²+8x-12
= 3x²+20x+8 the answer I think so
- 5x²-8x+12 = 8x²+12x+20
(+) -5x²+8x-12
= 3x²+20x+8 the answer I think so