Question

please answer the question ​

Answer 1

Step-by-step explanation:

Here we put value and multiply after we change sign and solve

Answer 2

Answer:

${3x}^{2} - 1 \div x + 1 \\ \frac{ {3x}^{2} - 1 }{x + 1 } \\ {3x}^{2 - 1} \\ 3x$