Question

(2n-1) (2n+3) Expand​

Answer 1

Using Identity

${x}^{2} - {y}^{2} = (x + )(x - y)$

$= {(2n)}^{2} - {(3)}^{2}$

$= {4n}^{2} - 9$

Answer 2

Answer:

by applying formula (x+a)(x+b)=x^2 +x(a+b)

(2n^2)+2n(-1+3)

4n^2+2n(2)

4n^2+4n