Question

(a)Verify that a + (b + c) = (a + b)+ c by taking a = 23, b = −35& c = −34.
(b)Verify the property a (b –c) = ab –acby taking a =12, b = −34& c = −23

Answer 1

Answer:

a))) a+(b+c)=(a+b)+c

a=23,b=-35,c=-34

a+(b+c)=(a+b)+c

23+(-35+-34)=(23+-35)+(-34)

23+(-35-34)=(23-35)-34

23+(-69)=(-12)-34

23-69=-12-34

-46=-46(-is cut by -)

46=46(proved)

b))) a=12,b=-34,c=-23

a(b-c)=ab-ac

12(-34-(-23))=12(-34)-12(-23)

12(-34+23)=-408+276

12(-11)=-132

-132=-132(-is cut by -)

132=132(proved)

Step-by-step explanation:

I hope it helps you