Answers

2016-07-28T22:29:23+08:00
6.) p(-5) = x^2 - 3x + 7
= (-5)^2 - 3(-5) + 7
= 40+7
= 47

7.) p(1) = 2(1)^3-10(1)^2 +(-5)
= -8 + (-4)
= -12

8.) p(-5/2)=(-5/2)^4-(-5/2)^3+2
P(-5/2)= 625/16+125/8+2
P(-5/2)= 907/16
p(-5/2)= 56 11/16

9.) p(-2/3)=(-2/3)^3-(-2/3)^2-8(-2/3)-4
P(-2/3)= -8/27-4/9+16/3-4
P(-2/3)= -20/27+36/27
P(-2/3)= 16/27

10.) =(-2/5)^2-8(-2/5)+7
= 4/25+16/5+7
= 259/25 or 10 9/25
0