Question

Ajutatima va rog la ex 6 (toate)

Answer 1

a) =45a/9=5a

b) =-35ab/35=-ab

c) =(7x9ab)/(-18)=-7a²b/2

d) =2(a+2b)/2=a+2b

e) =[-9(4x-2y)]/9=4x-2y

f) =25a²b/7

g) =[43x5(x+y)]/2=215(x+y)/2

h) =35(a-b)/10:7/10=[35(a-b)/10]x10/7=5(a-b)

i) =25a:(-21a)=-25a/21a=-25/21

j)= 4a/5x7/2x(-16/70)=4a/5x(-8/10)=-16a/20=-4a/5

k) =[-20(a+b)²]/40=-(a+b)²/2

l) =[-2√2(a-b)³]/4√2=-(a+b)³/2