Question

I need help with numbers 20,21,and22

Answer 1

20) the answer is -43

21) the answer is 25

22)the answer is -5

Explanation:

20)
`(p(p+n^(2)))/(6)`

n=-7

p=-6

we have:

`(-6*(-6+(-7)^(2)))/(6)\\\\(-6*(-6+49))/(6)\\\\(-6*(43))/(6)\\\\(-258)/(6) \\-43`

21) mp-(p-(m-n))

m= -1 n=-6 p=-10

-1*-10-(-10-(-1-(-6)))

10-(-10-(5))

10-(-15)

10+15=25

22)
`m-(m+m)/(2) - n`

m=1 n=5

1-
`(1+1)/(2) -5`

1- 2/2 -5

1-1-5 =-5