|
|
|
|
|
Calculadora FOIL
A calculadora multiplicará dois binômios usando o método FOIL, com as etapas mostradas.
Sua entrada
Multiplique a $$$\left(2 x + 1\right) \left(5 x + 7\right)$$$ usando FOIL.
Solução
$$$\left(\color{red}{\left(2 x\right)} + \color{purple}{\left(1\right)}\right) \left(\color{green}{\left(5 x\right)} + \color{blue}{\left(7\right)}\right) = \underbrace{\color{red}{\left(2 x\right)} \color{green}{\left(5 x\right)}}_{\text{Primeiro}} + \underbrace{\color{red}{\left(2 x\right)} \color{blue}{\left(7\right)}}_{\text{Exterior}} + \underbrace{\color{purple}{\left(1\right)} \color{green}{\left(5 x\right)}}_{\text{Interno}} + \underbrace{\color{purple}{\left(1\right)} \color{blue}{\left(7\right)}}_{\text{Durar}} = 10 x^{2} + 14 x + 5 x + 7 = 10 x^{2} + 19 x + 7$$$