Question

Find the solution set of (2x + 1)(2x – 1) + 1 = 0​

Answer 1

Answer:

$(2x + 1)(2x - 1) + 1 \\ \implies {(2x)}^{2} - {(1)}^{2} + 1 = 0 \\ \implies \: 4 {x}^{2} - 1 + 1 = 0 \\ \implies4 {x}^{2} = 0 \\ \implies {x}^{2} = 0 \\ \implies \: x = 0 \\ thus \: \\ solution \: set \: = \{0 \}$

Answer 2

Step-by-step explanation:

4x - 2x + 2x -1 + 1 =0

4x=0

x=0÷4

x=0