Question

34. Simplify : (2x +5y) (3x + 4y ) – ( 7x + 3y ) (2x +y).​

Answer 1

Answer:

52Y and 34 X is the correct answer

Answer 2

Answer:

(2x + 5y) (3x + 4y) - (7x + 3y) (2x + y)

= 2x(3x + 4y) + 5y(3x + 4y) - 7x(2x + y) + 3y(2x + y)

= 6x^2 + 8xy + 15xy + 20y^2 - 14x^2 - 7xy + 6xy + 3y^2

= 6x^2 - 14x^2 + 20y^2 + 3y^2 + 8xy + 15xy - 7xy + 6xy

= -8x^2 + 23y^2 + 22xy