Question

Qual a forma fatorada da função f(x)=x2-3x-10?

Answer 1

Olá Daiana!

$\\ \displaystyle \mathsf{f(x) = x^2 - 3x - 10} \\\\ \mathsf{f(x) = x^2 + 2x - 5x - 10} \\\\ \mathsf{f(x) = x(x + 2) - 5(x + 2)} \\\\ \mathsf{f(x) = (x + 2) \cdot [x - 5]} \\\\ \boxed{\mathsf{f(x) = (x + 2)(x - 5)}}$