Question

If p(x)= x2 +3X -5, find p(2) + p(1).


please give right answer only​

Answer 1

ANSWER:

• Value of the above expression is 4.

GIVEN:

• P(x) = x²+3x-5

TO FIND:

• Value of P(2) + P(1)

SOLUTION:

=> P(x) = x²+3x-5

Finding P(2)

=> P(2) = (2)²+3(2) -5

=> P(2) = 4+6-5

=> P(2) = 5

Finding P(1)

=> P(1) = (1)²+3(1) -5

=> P(1) = -1

Now:

P(1)+P(2)

= 5+(-1)

= 4

Value of the above expression is 4.

Answer 2

${ \huge{ \bold{ \underline{ \underline{ \green{Question:-}}}}}}$

If p(x)= x² +3x -5, find p(2) + p(1)..

______________________

${ \huge{ \bold{ \underline{ \underline{ \red{Answer:-}}}}}}$

✎Given :

• x² + 3x -5

✎To Find :

• p(2) + p(1)

✎Solution :

✎Firstly Calculate p(2) :

$\dashrightarrow\sf{p(2) ={(2)}^{2}+3(2) -5}$

$\dashrightarrow\sf{p(2) =4+6-5}$

$\dashrightarrow\sf{p(2) =10-5}$

$\dashrightarrow\sf{{ \large{ \bold{ \bold{ \bold{ \orange{p(2)=5}}}}}}}$

✎Then Calculate p(1) :

$\dashrightarrow\sf{p(1) ={(1)}^{2}+3(1) -5}$

$\dashrightarrow\sf{p(1) =1+3-5}$

$\dashrightarrow\sf{p(1) =4-5}$

$\dashrightarrow\sf{{ \large{ \bold{ \bold{ \bold{ \purple{p(1) =-5}}}}}}}$

✎Now,

$\dashrightarrow\sf{p(2) +p(1) }$

$\dashrightarrow\sf{5+(-1)}$

$\dashrightarrow\sf{5-1}$

$\dashrightarrow\sf\bold{4}$

✎So, the value of p(2) and p(1) is 4..