Question

If P(x) = x2 – 4x +3, evaluate P (2) – P (–1)

Answer 1

Answer:

After putting x=2 in equation, we get −1.

After putting x=−1, we get 8

After putting x= $\frac{1}{2}$

, we get $\frac{5}{4}$

So, p(2)−p(−1)+p $( \frac{1}{2} ) \: = - 1 - 8 + \frac{5}{4}$

=−9+ $\frac{5}{4} = \frac{ - 36 + 5}{4} = \frac{ - 31}{4}$

Answer 2

Step-by-step explanation:

So, p(2)−p(−1)+p ( \frac{1}{2} ) \: = - 1 - 8 + \frac{5}{4}(

2

1

)=−1−8+

4

5

=−9+ \frac{5}{4} = \frac{ - 36 + 5}{4} = \frac{ - 31}{4}

4

5

=

4

−36+5

=

4

−31