Question

Find the following products using appropriate identities.

(i.) {x + 3}{x + 3}​

Answer 1

$\huge\mathbb\red{BONJOUR,}$

$\huge\mathfrak{Answer:}$

Here we can use Identity 1 : {x + y}2 = x2 + 2xy + y2.

Putting y = 3 in it, we get

{x + 3}{x + 3} = {x + 3}2 = x2 + 2{x}{3} + {3}2

= x2 + 6x + 9.

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Answer 2

hala mate,

(x+3)(x+3)

=(x+3)²

{using the formula (a + b)² = a² + 2ab + b²}

let a = x ;  b =3

x² + 2(x)(3) + 3²

= x² + 6x + 9

hope it helps!