Question

can someone plz explain this 2 question to me,,, I have exam tomorrow and idk. plz don't answer useless I don't need that kind of answer​

Answer 1

Answer:

4.

4493×99-(-4493)

4493×99+4493 ( as Minus into minus is plus )

4493×(100-1)+4493 ( as 99 can be written as100-1)

449300-4493+4493( just opened bracket with 4493)

449300 ( -4493+4493= 0)

5. 13256×(-99)-13256

13256×(-100+1) - 13256 ( -99 can be written as -100+1)

-1325600+13256-13256( opened the bracket)

-1325600( 13256+(-13256)= 0 )