Answer:
20) the answer is -43
21) the answer is 25
22)the answer is -5
Step-by-step explanation:
20) [tex]\frac{p(p+n^{2})}{6}[/tex]
n=-7
p=-6
we have:
[tex]\frac{-6*(-6+(-7)^{2})}{6}\\\\\frac{-6*(-6+49)}{6}\\\\\frac{-6*(43)}{6}\\\\\frac{-258}{6} \\-43[/tex]
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) [tex]m-\frac{m+m}{2} - n[/tex]
m=1 n=5
1- [tex]\frac{1+1}{2} -5[/tex]
1- 2/2 -5
1-1-5 =-5
