Question

Buna,nu trebuie toate exercițiile neapărat cat stiti:) dau 55 de puncte! si coronița. :)​

Answer 1

1. 40-4=36
2.x=4•3=12
3.8
4.10
5.60⁰ (triunghiul format de diagonale este echilateral)
6.25-(-10)= 25+10=35
2. x=√2/5•3+3/3√2
=5/15=1/3

y=√2/6•5√2/1=5•2/6=10/6=5/3

m.a=(1/3+5/3)/2=2/2=1

3.1……3/7 • x
2......36

x=suna de bani
x-3x/7=36
7x-3x=254
4x=254
x=63,5 lei

4. a) Gf intersectat cu OX={A}
f(x)=0=> 2x=-3
x=-3/2. A(-3/2;0)


Gf intersectat cu OY={B}
f(0)=3 B(0;3)

b) P(2x;x)
f(2x)=x
f(2x)=4x+3=x
x=-1

5. x+2-x+2-1/(x-2)(x+2) : [(x-1)(x+1)/(x-2)(x+2) - (x-2)(x+2)/(x-2)(x+2)]

=3/(x-2)(x+2) • (x-2)(x+2)/ x²-1-(x²-4)

=3/x²-1-x²+4

=3/3=1

Sper ca te-ma ajutat! SUCCES!