Question

$(x + 3) {}^{2}$
​

Answer 1

Step-by-step explanation:

$(x + 3) ^{2} \\ = {x}^{2} + 2 \times 3 \times x + 9 \\ = {x}^{2} + 6x + 9 \\ = {x}^{2} + 3x + 3x + 9 \\ = x(x + 3) + 3(x + 3) \\ = (x + 3)(x + 3) \\ x = - 3$

Answer 2

Answer:

✯ ( x+3) ^2 ✯

______________________

Using identity : ( a+ b ) ^ 2)

= a^2+b^2+2ab

______________________

APPLYING IDENTITY , WE GET

= ( x) ^ 2 + (3)^2 + 2×x×3

= x^2+9 + 6x

= x^2+6x+9

BY MIDDLE TERM SPLITTING,

=x^2+ 3x +3x+9

=x( x+3) 3(x+3)

=( x+ 3) ( x+3)

Therefore,

x+3= 0

______

x= -3

______

AND WE ARE DONE !

ANSWER = -3