Question

VA ROG !!!
SUB I : 2,4,5
SUB II : 2,3,4,5,6

Answer 1

SUB.I
2.4x=60,sau,x=15
=>3x-40=5
4.12,6:3=4,2m
5.At=6l²=96=>l²=16=>l=4cm

SUB.II
2.2-x=5=>x=(-3)
x-2=5=>x=7
A={-3,7}
3.Fie,x-bursa,elevului
2x=450+x
x=450lei
4.a=18-12√6+12-6√2-9+6√2-2
a=19-12√6
5.f(0)=-3
f(1)=-1
f(2)=1
Coordonatele,de,intersectie,cu,Oy,sunt,(0;-3),iar,cu,Ox,sunt,(0;1,5)
6.E(x)=x/(x³+x²)·(2x+2)(3x-3)/(2x²+3x-2-x²-3x+1)
E(x)=1/(x²+x)·2(x+1)3(x-1)/(x²-1)
E(x)=6(x+1)(x-1)/(x²+x)(x+1)(x-1)
E(x)=6/(x²+x)
E(x)=6/x(x+1)