Question

What is the expansion of (x +3)(x+3)

1) x2 +6x + 9
2) x2-6x +9
3) x2+6x-9
4) any other​​

Answer 1

Answer:-

Option (a) x²+6x+9

Explanation:-

$(x + 3)(x + 3) = {(x + 3)}^{2} \\ \\ we \: \: know \: \: that \: \: \\ \\ {(a + b)}^{2} = {a}^{2} + {b}^{2} + 2ab \\ \\ {(x + 3)}^{2} = {x}^{2} + {3}^{2} + 6x \\ \\ {(x + 3)}^{2} = {x}^{2} + 6x + 9$