Question

$\sqrt{(5 + 3 \sqrt{3) {?}^{2} } }$
b)|5-3radical din 3|

aflati media geometrică si media aritmetică a numerelor a si b

Answer 1

a=√(5+3√3)²=|5+3√3|=5+3√3

b=|5-3√3|=3√3-5, ptca 3√3=√27>√25=5

m.a.(a,b) =(a+b)/2= (5+3√3+3√3-5)/2=2*3√3/2=3√3

a*b=(5+3√3)(3√3-5)=(3√3+5)*(3√3-5)=(3√3)²-5²=27-25=2

m.g.(a,b)=√(a*b)=√2