Question

Add the product of (2y – x) and (4y - x) to the product of (x - 5y) and (7y + 3x) ​

Answer 1

Answer:

2y(4y-x) - x (4y-x)

= 8y²-2xy -4xy+x

= -6xy+8y²+x

x(7y+3x) -5y(7y+3x)

= 7xy+3x²-35y²-15xy

= -8xy-35y²+3x²

So, -6xy+8y²+x +(-8xy)-35y²+3x²

= -14xy-23y²+x+3x²