Question

Q1a. Expand and simplify"
(2x + 1) (2x - 3)
​

Answer 1

Answer:

4x^2 -1

Step-by-step explanation:

(2x+1)(2x-1)

Multiply the first term of the first bracket with the second bracket.

Multiply the second term of the first bracket with the second bracket.

2x(2x-1) + 1(2x-1)

4x^2 - 2x + 2x -1

4x^2 - 1 is the answer

Answer 2

Answer:

4x^2 -1

(2x+1)(2x-1)

Multiply the first term of the first bracket with

the second bracket. Multiply the second term of the first bracket

with the second bracket.

2x(2x-1) + 1(2x-1)

4x^2 - 2x + 2x -1

4x^2 - 1 is the answer