Question

Scoateti factorul comun in afara parantezelor,apoi calculati:
a)3•5+3•2
4•10-4•6
B)2•6+2•5+2•9
5•10+5•3+7•5
2•8+8•3+5•8
C)8•5+5•2
10•7-7•3
Va rog urgent,dau coroanaa​

Answer 1

Răspuns:

Explicație pas cu pas:

Scoateti factorul comun in afara parantezelor,apoi calculati:

a) 3•5+3•2=3•(5+2)=3•7=21

  4•10-4•6=4•(10-6)=4•4=16

B) 2•6+2•5+2•9=2•(6+5+9)=2•20=40

   5•10+5•3+7•5=5•(10+3+7)=5•20=100

   2•8+8•3+5•8=8•(2+3+5)=8•10=80

C) 8•5+5•2=5•(8+2)=5•10=50

   10•7-7•3=7•(10-3)=7•7=49

Answer 2

Răspuns:

a) 3(5+3)=3•8=24

4(10-6)=4•4=16

b)2(6+5+9)=2•20=40

8(2+3+5)=8•10=80

c)5(8+2)=5•10=50

7(10-3)=7•7=49