Question

If p(x) = x2-3x+5, then the value of p(1)+p(-1)

Answer 1

Answer:

Given, p(x)=x

3

−3x

2

+2x

p(2)=(2)

3

−3(2)

2

+2(2)

=8−12+4

=12−12=0

hope it helps you

Answer 2

Answer:

The value of p(1) + p(-1) = 12

Step-by-step explanation:

Given,

p(x) = x²-3x+5

To find,

The value of p(1)+p(-1)

Solution:

If p(x) is given, the value of p(a) is obtained by substituting the value of the variable as 'a'

p(x) = x²-3x+5,

Substitute the value of a= 1 in p(x) we get,

p(1) =  1²-3×1+5 = 1 - 3 +5 = 3

Substituting the value of a = -1 in p(x) we get,

p(-1) =( -1)²-3×(-1)+5 = 1 +3 +5 = 9

∴p(1) + p(-1) = 3 + 9 = 12

The value of p(1) + p(-1) = 12

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