Question

Please let what is the answer of =expand (3x+1)²

Answer 1

✌✌Here is your answer ✌ ✌

$\huge\boxed{\red{\bold{Answer}}}$
$(3x + 1) {}^{2} = 9x {}^{2} + 1 + 6x$

note:-

$(a+b) {}^{2} = (a){}^{2}+(b){}^{2}+(2ab)$

$\huge\underline{\purple{\bold{Thanks}}}$

I hope it helps you

Answer 2

Here is your answer

(3x+1)²
(a+b)²=a²+b²+2ab

(3x)²+(1)²+2.3x.1
9x²+1+6x
9x²+6x+1
9x²+3x+3x+1
3x(3x+1)+1(3x+1)
(3x+1) (3x+1)
x= -1/3
x= -1/3