Question

x2-1 supra x + 1
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Answer 1

Explicație pas cu pas:

Salutare!

$\color{magenta} \boxed{ \boxed{ \bf {a}^{2} - {b}^{2} = (a + b)(a - b)}}$

$\bf \dfrac{ {x}^{2} - 1}{x + 1} = \dfrac{(x - 1) \cdot(x + 1)}{x + 1} = \dfrac{(x - 1) \cdot \not(x + 1)}{ \not(x + 1)} = \boxed{ \boxed{ \bf x - 1}}$

--pav38--

Answer 2

Rezolvarea este atasata.