Question

D eh I te ft gygg gi Tahira’s

Answer 1

Step-by-step explanation:

5x-10+4x-12+5x-20

we should add 5x+4x+5x=14x

take 14x leave as it is

14x-10+-12=14x-22

Answer 2

Step-by-step explanation:

4) 5x-10 +4x-12+ 5x-20

14x-32

2(7x-16)

5) (7x-2y)²

49x²+4y²-28xy

6) (103)²

(100+3)²

(10000+9+600)

10609

7). 2a-1)6a²-7a-5(3a+2

- 6a²+3a

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x. -4a-5

4a-2