Question

Q1. Expand the following expressions:
1. 5(x +2) -2
2. 4y ( x - y) + 3x( x - y)

Answer 1

Answer:

(1) 5x + 8

(2) 3x^2 - 4y^2 + xy

Step-by-step explanation:

(1)= 5(x+2) - 2

= 5x + 10 - 2

= 5x + 8

(2) = 4y(x-y) + 3x (x-y)

=4xy - 4y^2 + 3x^2 - 3xy

=3x^2 - 4y^2 + xy