Question

multiply the following using appropriate identites
(x+7)(x+7)​

Answer 1

x (x,+7)+7(x+7)

(x*x)+(x*7)+(7*x)+(7*7)

x²+7x+7x+49

x²+14x+49

Answer 2

$\huge{\bold{\sf{Question:}}}$

• $\sf\small{(x\:+\:7)\:(x\:+\:7)}$

$\huge{\bold{\sf{Solution:}}}$

• $\sf\small{(x\:+\:7)\:(x\:+\:7)}$

$\small\pink{\bold{\sf{☯\:Using\:Identities \:⇥\:(a\:+\:b)²\:=a²\:+\:b²\:+\:2ab}}}$

$\sf\small{\:\::⟹\:(x\:+\:7)²}$

$\sf\small{\:\::⟹\:x²\:+\:2\:.\:x\:.\:7\:+\:(7)²}$

$\sf\small{\:\::⟹\:x²\:+\:14x\:+\:49}$

${ }$

• $\small{\bold{\underline{\underline{\boxed{\sf{\bold{So,\:the\:answer\:is\:\:x²\:+\:14x\:+\:49}}}}}}}$

━━━━━━━━━━━━━━━━━━━━━━━━━━$\small\green{\bold{\sf{@ItsNothing}}}$