Question

exercise 2.2 full please with full answers on a 2please

Answer 1

p(x)=4x^-5x+3

p(x)=0=4(0)-5(0)+3=0-0+3=3

p(-1)=-1=4(-1)^2-5(-1)+3= 4-5+3=-7-5= 2

P(x)=2 = 4(2)^2-5(2)+3 =16-10+3=19-10=9

P(x) = 1/2 = 4(1/2)^2 -5(1/2)+3 = 4/2-5/2+3 =2-5/2+3 = 5-5/2 = 5/2= 0.4

Answer 2

1) x=0
5 (0)_4 (0×0)+3
0-0+3
3

x=-1
5 (-1)-4 (1×1)+3
-5-4+3
-9+3
6

x=2
5 (2)-4 (2×2)+3
10-16+3
-6+3
-3

2) p (0),p (1),p (2)

a )p (y)=y square -y+1

p (0)=0 square -0+1
0+1=1

p (1)=1square-1+1
1-1+1=1

p (2)=2 square -2+1
-2+1
-1



b)
p (t)=2+t+2t square -t cube
p (0)=2+(0)+2 (0)square -(0)cube
2+0-0
2

p (1)=2+(1)+2 (1)square -(1)cube
3+2-1
4

p (2)=2+(2)+2 (2)square -(2) cube
4+2 (4)-(8)
4+8-8
4

c) p (x) =x cube
p (0)=(0)cube
0

p (1)=(1)cube
1

p (2)=(2)cube
8

d) p (x)=(0-1)(0+1)
-1+1
0

p (1)=(1-1)(1+1)
0

p (2)=(2-1)(2+1)
(1) (3)
3

3)
a)px=3x+1,x=-1 /3
p (-1/3)=3 (-1/3)+1
-1+1
0

b)p (x)=5x-pie,x=4/5
p=(4/5)=5x-pie
p (4/5)=5 (4/5)-pie
4-pie

c) p (x)=x square -1,x=1,-1
p (1)=(1)square -1
-1+1
0

d)p (x)=(x+1)(x-2),x=-1, 2
p (-1)=((-1)+1) (-1-2)
3

e)p (x)=x square, x=0
p (0)=(x)square
0

f) p (x)=lx+m, x-m/l
p (-m/l)=(-m/l)+my
life

g) p (x)=3x square -111, x=-1/