Question

Hey there .. This is my question..The correct answer will be marked a brainliest:D

Answer 1

( x + 3 ) ( x + 3 ) = ( x + 3) ²

Using identity, ( x + y ) ² = x ² + y² + 2xy

( x + 3 ) ² = x² + 3² + 2*x*3

(x + 3 ) ² = x² + 9 + 6x.

ANSWER => x² + 6x + 9.

Answer 2

Hey there

The suitable identity is (a+b)²

and the procedure is

$(x + 3)(x + 3) = {x + 3}^{2} = {x}^{2} + 2 \times x \times 3 + {3}^{2}$

= x²+ 6x + 9