Question

1. Simplify by removing brackets and grouping like terms:
(a) x + (y - z) - (32 + 2y - 2x) - (x - y + 2z)

(b) (-4a3 +9a²b2 - 763 - 4ab) – (7ab + b3 - 3a²b2 + 5a?)

2. Simplify: 5a - 4[10a + 3{x - a -2(a +x)}]​

Answer 1

Answer:

Answer:

Step-by-step explanation:

2x²-2xy-2xz+2yx+2y²-2yz+2zx-2zy+2z²

2x²+2y²+2z²-2xy+2yx-2xz+2zx-2yz-2zy

2x²+2y²+2z²-4zy

2(x²+y²+z²-2zy)