SOLUTION: Given the function p(c) = c2 + c, complete the following. (a) Evaluate p(−4). (b) Solve p(c) = 2. (Enter your answers as a comma-separated list.) c =

Algebra ->  Numeric Fractions Calculators, Lesson and Practice -> SOLUTION: Given the function p(c) = c2 + c, complete the following. (a) Evaluate p(−4). (b) Solve p(c) = 2. (Enter your answers as a comma-separated list.) c =       Log On


   

Question 1048308: Given the function
p(c) = c2 + c,
complete the following.
(a) Evaluate
p(−4).


(b) Solve
p(c) = 2.
(Enter your answers as a comma-separated list.)
c =
Answer by MathLover1(20849) About Me  (Show Source):
You can put this solution on YOUR website!

p%28c%29+=+c%5E2+%2B+c
complete the following.
(a) Evaluate
p%28-4%29

p%28-4%29=+%28-4%29%5E2+%2B+%28-4%29
p%28-4%29=+16+-4
p%28-4%29=+12

(b) Solve
p%28c%29+=+2
2=+c%5E2+%2B+c
0=+c%5E2+%2B+c-2
c%5E2+%2B+c-2=0........factor completely, write c as 2c-c
c%5E2+%2B+2c-c-2=0
%28c%5E2+%2B+2c%29-%28c%2B2%29=0
c%28c+%2B+2%29-%28c%2B2%29=0
%28c-1%29%28c%2B2%29=0
solutions:
if %28c-1%29=0->c=1
if %28c%2B2%29=0->c=-2

answers: -2,1