Question

11. Use a suitable identity to find the products.
(x + 3) (x + 3)​

Answer 1

Answer:

x² + 6x + 9

Step-by-step explanation:

(x + 3) (x + 3)

(x + 3)²

x² + 2(3)x + 3²

x² + 6x + 9

Answer 2

$\huge\sf\blue{an{\mathcal{S}}wer:}$

${ }$

$\bf{{\underline{To~solve}}:}$

$\tt (x + 3)(x + 3) \: \: \: \: \: \: \: \: \: \: \: \: \: \\ \bf \underline{Identity} : \: (a + b)(a + b) = {a}^{2} + 2ab + {b}^{2} \\ \tt \longmapsto {(x)}^{2} + 2(x)(3) + {(3)}^{2} \: \: \: \: \: \: \: \: \\ \tt \longmapsto {x}^{2} + 2(3x) + 9 \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \\ \tt \longmapsto \blue{ \underline{ \boxed{ \bf {x}^{2} + 6x + 9}}} \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \:$