Question

Alg me ajuda pfv, rapidoooooo

Answer 1

Resposta:

$\textsf{Leia abaixo}$

Explicação passo a passo:

$\mathsf{(x + 5)^2 - x^2 = 225}$

$\mathsf{(x^2 + 10x + 25) - x^2 = 225}$

$\mathsf{10x + 25 = 225}$

$\mathsf{10x = 225 - 25}$

$\mathsf{10x = 200}$

$\mathsf{x = \dfrac{200}{10}}$

$\boxed{\boxed{\mathsf{x = 20}}}$