Question

2- Remove the symbols of grouping in each of the following and simplify the resulting

expressions by combining like terms.
(a) 3x² + (y²-4z) - (2x - 3y + 4z)
(b) 2(4xy + 32) + 3(x-2xy) - 4(z - 2xy)

Answer 1

(a) 3x^2 + y^2 - 8z - 2x - 3y

(b) 10xy + 3x - 4z + 64

Explanation:

(a) 3x^2+ (y^2 - 4z) - (2x - 3y + 4z) =

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

3x^2 + y^2 - 8z - 2x - 3y

(b) 2(4xy + 32) + 3(x - 2xy) - 4(z - 2xy)

8xy + 64 + 3x - 6xy - 4z + 8xy

10xy + 3x - 4z + 64