Question

Ajutor va rog frumos la 3 exercitii

1.Calculati:
a)15+(-√2)-3+3√2 b)$\pi$-3,14+1,04+2,1
c)12+√2-(-8√20 d)7-(-√3)-√3-5

2.Calculati:
a)3√2-2√2 b)2√3-√3
c)4√7+5√7-2√7 d)3√5+2√5-4√5-2√5

3.Calculati:
a)√2-(-2√2)+(-√2)-(+3√2 b)4√3-(2√3+5√3)
c)-(-√5)-(2√5-7√5 d)√2-(3√2+√2)+(6√2-9√2)

Answer 1

a)15+(-√2)-3+3√2 =12+2√2
b)-3,14+1,04+2,1 ==3,14
c)12+√2-(-8√2)=12+√2+8√2=12+9√2
 d)7-(-√3)-√3-5=7+√3-√3-5=2

2.Calculati:
a)3√2-2√2 =√2
b)2√3-√3=√3
c)4√7+5√7-2√7=7√7
d)3√5+2√5-4√5-2√5=-√5

3.Calculati:
a)√2-(-2√2)+(-√2)-(+3√2=√2+2√2-√2-3√2=√2
b)4√3-(2√3+5√3)=4√3-2√3-5√3)=-3√3
c)-(-√5)-(2√5-7√5)=√5-2√5+7√5=6√5
d)√2-(3√2+√2)+(6√2-9√2) =√2-3√2-√2+6√2-9√2 =
=-3√2+6√2-9√2 =-6√2