Question

If P = -12x² – 10xy + 5y², Q = 7x² + 6xy + 2y², and R = 5x + 2xy + 4y ; find :

(i) P – Q

(ii) Q + P

(iii) P – Q + R

(iv) P + Q + R

Answer 1

 P = -12x² – 10xy + 5y², 

Q = 7x² + 6xy + 2y², 

and R = 5x + 2xy + 4y ;