How many terms are there in the expression 5xy+9yz+3zx+5x−4y?
When 7xy+5yz−3zx, 4yz+9zx−4y and −3xz+5x−2xy are added, we get
Find the value of A+B+C if : A=(7xy+5yz−3zx) B=(4yz+9zx−4y) C=(−3xz+5x−2xy)