Question

if p(x)=2x^2-5x+7, evaluate :p(3)-p(-2)​

Answer 1

Step-by-step explanation:

p (x)=2x^2-5x+7, evaluate p(3)-p (-2)

then put the value in equation

p (3)=2×3^2-5×3+7

p (3)=18-15+7

p (3)=10

then

p(-2)=2×-2^2-5×-2+7

p (-2)=8+10+7

p (-2)=25

put the value of p (3)andp (-2) in given equation

then answer is:p (3)-p (-2)

10-25

answer=-15

Answer 2

The correct answer is "-15".

Step-by-step explanation:

$The \ given \ equation \ is:\\\\p(x)=2x^2-5x+7\\\\p(3)-p(-2)=?\\\\Now,\\\\p(3)=2(3)^2-5(3)+7\\\\p(3)=2(9)-15+7\\\\p(3)=18-15+7\\\\p(3)=10\\\\and,\\\\p(-2)=2(-2)^2-5(-2)+7\\\\p(-2)=2(4)-5(-2)+7\\\\p(-2)=8+10+7\\\\p(-2)=25\\\\According \ to \ the \ question,\\\\=p(3)-p(-2)\\\\=10-25\\\\=-15$

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