Question

ajutati maaaa ex 7 ....​

Answer 1

Explicație pas cu pas:

a)

$\dfrac{ {x}^{2} + 2x}{x + 2} = \dfrac{x(x + 2)}{x + 2} = x$

b)

$\dfrac{(x + 1)(x + 2)}{2 {x}^{2} + 4x} = \dfrac{(x + 1)(x + 2)}{2x(x + 2)} = \dfrac{x + 1}{2x}$

c)

$\dfrac{{x}^{2} + 2x}{{x}^{2} + 4x + 4} = \dfrac{x(x + 2)}{ {(x + 2)}^{2} } = \dfrac{x}{x + 2}$

d)

$\dfrac{{x}^{2} + 3x + 2}{{x}^{3} + 2 {x}^{2} } = \dfrac{(x + 1)(x + 2)}{ {x}^{2}(x + 2) } = \dfrac{x + 1}{ {x}^{2} }$