Question

1. Simplify each of the following algebraic expressions by removing grouping symbols.
a) -2(x² - y² + xy) - 3(x² + y² - xy)
b) a - [b - {a - (b - 1) + 3a}]​

Answer 1

Answer:

a. -5x² -y² +xy

b. 5a-2b+1

Step-by-step explanation:

a. -2(x² - y² +xy) - 3(x² + y² -xy)

-2x² +2y² - 2xy -3x² -3y² +3xy

-5x² -y² +xy

b. a - [b - { a - (b -1) + 3a}]

a - [b - {a - b + 1 +3a}]

a - [b - {4a - b + 1}]

a - [b - 4a + b -1]

a - [2b - 4a - 1]

a - 2b + 4a + 1

5a -2b + 1