Question

2.)Determine os quadrados das seguintes somas, aplicando a regra prática.

a)(x+3)² =
b)(2x+1)² =
c)(4x+3)² =
d)(a+3)²=
e)(4a+3b)²=
f)(x²+x)²=

Answer 1

$\large\boxed{\begin{array}{l}\rm a)~\sf (x+3)^2=x^2+6x+9\\\rm b)~\sf (2x+1)^2=4x^2+4x+1\\\rm c)~\sf (4x+3)^2=16x^2+24x+9\\\rm d)~\sf (a+3)^2=a^2+6a+9\\\rm e)~\sf (4a+3b)^2=16a^2+24ab+9b^2\\\rm f)~\sf (x^2+x)^2=x^4+2x^3+x^2\\\boxed{\boxed{\boxed{\boxed{\sf regra\,geral: (a+b)^2=a^2+2ab+b^2}}}} \end{array}}$