Question

• Find the product of
a) 3x²,4y²,7xy²

please answer me fast​

Answer 1

Answer:

Hii

Let the number substacted be a

Then

3x²-4y²+5xy+20-a= -x²-y²+6xy+20

3x²+x²-4y²+y²+5xy-6xy+20-20=a

4x²-3y²-xy=a

Then the number which should taken away is 4x²-3y²-xy