Question

Aduceti la forma cea mai simpla expresia:
a) $\sqrt{36 x^{2} y^{3} }$ daca x < 0, y > 0
b)$\sqrt \frac{a^{6} }{25b^{2} }$ daca a $\geq$ 0, b > 0
c)5xy * $\sqrt{ \frac{1}{100xy^{2} } }$ daca x > 0, y < 0

Answer 1

a) R: 6x√y;  orice nr. negativ ridicat la ² devine pozitiv.

b) a³/ 5b

c)5xy* 1/10y*√x⁻¹= x/2*√x⁻¹