Question

Q3. If p(x) = 5x - 4x2+3, then
find the value of p(1)+p(-
1)+p(2).​

Answer 1

Step-by-step explanation:

putting the values

p(1)= 5×1-4×2+3

= 5-8+3

=5-5=0

p(-1)=5(-1)-4×2+3

=-5-8+3

=-13+3=-10

p(2)=5×2-4×2+3

=10-8+3

=10-5=5

Answer 2

Answer:

Step-by-step explanation:

p(x)=5x-4x2+3

Then, p(1)=5*1-4*1*2+3

                =5-8+3

                =0

Then, p(-1)=5*(-1)-4*(-1)*2+3

                 =-5+8+3

                 =6

Then, p(2)=5*2-4*2*2+3

                 =10-16+3

                 =-3

So,p(1)+p(-1)+p(2)=0+6-3=3

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