Posted in Հանրահաշիվ, Uncategorized

Հանրահաշիվ

Փակագծերի բացում և նման անդամների միցում

1)5a-2a-3b=3a-3b

2)7x-4x+2y=3x+2y

3)4y-y+3=5y+3

4)9m+6n-7m=16m+6n

5)3a^2-5a-a^2+4a=3a^2+3a^2+9a-a^2

6)5b-3b-2c+b+4c=2b-6c+b

7)3k-6n-2k+6n=1k+12n

8)4x+3+7-2x=2x+3+7

9) (10x^3-4x^2)-(2x^2-5x^3)= 10x^3 – 4x^2 – 2x^2 + 5x^3

10) 5a^3(b^2)- 9b^4-(3a^3(b^2)-4b^4)= 5a^3 (b^2) – 9b^4- 3a^3(b^2)+4b^4

11)4x^(2y)- (3xy^2+5(x^2)y­+12xy^2=4x^(2y)- 3xy^2+5 (x^2) y­-12xy^2

12) -7a^5-(3b^3-a^5)-(5b^3-11a^5)= -7a^5 – 3b^3+a^5 –  5b^3+11a^5

13) (13x-9y+7z)-(10x+4y-3z)+x+5y-(2z-2y)-8z= 13x-9y+7z – 10x-4y+3z + x+5y – 2z+2y -8z

14) 4m^2 – (3m^2-4mn+2n^2)-2mn+(-7m^2+5mn)+3m^2+15m^2 = 4m^2 –  -3m^2+4mn-2n^2 -2mn+ 7m^2-5mn +3m^2+15m^2

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