Question

if p(X) =x2 -4x+ 3 eveluate p(2) -p(-1) + p (-1/2)

Answer 1

Answer:

$p(2) + p( - 1) + p( \frac{1}{2} ) = \frac{33}{4}$

Step-by-step explanation:

$p(2) = {2}^{2} - 4 \times 2 + 3 = 4 - 8 + 3 = - 1 \\ \\ p( - 1) = { (- 1)}^{2} - 4( - 1) + 3 = 1 + 4 + 3 = 8 \\ \\ p( - \frac{1}{2} ) = {( - \frac{1}{2} )}^{2} - 4( \frac{1}{2} ) + 3 = \frac{1}{4} - \frac{2}{1} + 3 = \frac{1}{4} + 1 = \frac{5}{4} \\ \\ \\ p(2) + p( - 1) + p( \frac{1}{2} ) = \frac{5}{4} + 8 - 1 = \frac{5}{4} + 7 = \frac{5 + 28}{4} = \frac{33}{4}$