Question

(2n-1) (2n+3) algebraic identities​

Answer 1

Answer:

4n² +2n -3 it is the answer for questions

Answer 2

$\rm{\pmb{{\underline{To~solve}}:}}$

• $\sf{(2n-1)(2n+3)}$

$\rm{\pmb{{\underline{Solution}}:}}$

${\sf{\pmb{{\underline{Identity}}:}}} \: {\sf{(x+a)(x+b)={\pmb{x^{2}+(a+b)x+ab}}}}$

$\sf (2n - 1)(2n + 3) \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \\ \sf \longmapsto {(2n)}^{2} + ( - 1 + 3)2n + ( - 1 \times 3) \\ \sf \longmapsto 4 {n}^{2} + (2)2n + ( - 3) \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \\ \sf \longmapsto \underline{ \boxed{ \sf{ \pmb{4 {n}^{2} + 4n - 3}}}} \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \:$

$\therefore\rm{\pmb{{\underline{Required~answer}}:}}$

• $\sf (2n - 1)(2n + 3) = \underline{ \underline{ \sf{ \pmb{4 {n}^{2} + 4n - 3}}}}$