Question

exercițiul 10 va rog ajutati - mă :(

Answer 1

a=0,002:10⁻³-30:√3+√300-8⁻¹:0,75

b=√7+√5-2/(√7-√5)  

Rezolvare: a=2:1000/(1:1000)-30√3/3+10√3-1:8/(75:100)

a=2:1000*1000-10√3+10√3-1:8/(3:4)

a=2-1:8*4:3=2-1/6=12-1/6=11/6  

b=√7+√5-2/(√7-√5) b=(√7-√5)*(√7+√5)-2/(√7-√5)

b=7+7√5-7√5-5-2/(√7-√5) b=7+7√5-7√5-7/(√7-√5)

b=0/(√7-√5) =>b=0  

a+b= 11/6+0 =11/6