Question

a )(2x-3y)*(4x+y)=
b) 2x(x-2y)-3y(4x-y)=
c) 2z(3w-4z)-5z(w+5z)

Answer 1

a )(2x-3y)*(4x+y) = 8x²+2xy-12xy-3y² = 8x²-10xy-3y²

b) 2x(x-2y)-3y(4x-y) = 2x²-4xy-12xy+3y² = 2x²-16xy+3y²

c) 2z(3w-4z)-5z(w+5z) = 6wz-8z²-5wz-25z² = wz-33z²

Answer 2

a )

(2x - 3y)*(4x + y) = 8x² + 2xy - 12xy - 3y²  = 8x² - 10xy - 3y²

b)

2x(x - 2y) - 3y(4x - y) = 2x² - 4xy - 12xy + 3y² = 2x² - 16xy + 3y²

c)

2z(3w - 4z) - 5z(w + 5z) = 6wz - 8z² - 5wz - 25z² = wz - 33z²