Question

wykonaj działania, a nastepnie redukcje wyrazów podobnych:

2(a-3b) + 4b-3(3a-b)

4 (x+5y) - 7 (3x-y) + 3y - x

3a (2-5b) - 4b (2-3b) + ab

4x (y-7) - 3y (-3-5x) + x (y-3)

Answer 1

A

 2(a-3b)+4b-3(3a-b)=

2a-6b+4b-9a+3b=

-7a+b

 

B

4(x+5y)-7(3x-y)+3y-x=

4x+20y-21x+7y+3y-x=

-18x+30y 

 

C

3a(2-5b)-4b(2-3b)+ab=

6a-15b-8b+12b2+ab=

6a-23b-8b+12b2+ab

 

D

4x(y-7)-3y(-3-5x)+x (y-3)=

4xy-8xy+9y+15xy+xy-3x=

12xy+9y-3x

 

proszę o naj!!!!!!!! 

Answer 2

2(a-3b) + 4b-3(3a-b)=2a-6b+4b-9a+3b=-7a+b

4 (x+5y) - 7 (3x-y) + 3y - x=4x+20y-21x+7y+3y-x=-18x+30y

3a (2-5b) - 4b (2-3b) + ab= 6a-15b-8b+12b^2 +ab= 6a-23b+12b^2 +ab

4x (y-7) - 3y (-3-5x) + x (y-3)= 4xy -28x +9y+15xy +xy -3x= 20xy-31x+9y