Question

Simplificati raportul:
a-3√a
√a-3

Answer 1

rationalizam cu √a+3
$\frac{(a- 3\sqrt{a})( \sqrt{a}+3) }{a-9} = \frac{a \sqrt{a}+3a-3a-9 \sqrt{a} }{a-9} = \frac{ \sqrt{a}(a-9) }{a-9} = \sqrt{a}$