Question

expand the following (3x-1)²​

Answer 1

here is ur answer:

${(3x - 1)}^{2} = {(3x)}^{2} + 1 - 2 \times 3x \times 1 \\ \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: = 9 {x}^{2} + 1 - 6x$

hope it helps you!