addelializWarnell addelializWarnell
  • 01-12-2016
  • Mathematics
contestada

Please help! Find the value of C such that each expression is a perfect-square trinomial.

p^2-30p+c


k^2-5k+c

Respuesta :

apologiabiology
apologiabiology apologiabiology
  • 01-12-2016
for ax^2+bx+c
when a=1
take 1/2 of b and square it
that is what c should be ideally

p^2-30p=c
-30/2=-15
(-15)^2=225
c=225
(p-15)^2 is factored form


k^2-5k+c
-5/2
(-5/2)^2=25/4
c=25/4
factored form is (x-5/2)^2
Answer Link

Otras preguntas

what fraction is equivalent to 1.7?
what is the word form of 3.75
The five interior angles in a  pentagon are in the ratio 2:3:4:5:6. What is the measure of the pentagon's largest angle?
What is 949 rounded to the nearest ten and hundred
Martin is making squares by arranging 26 sticks . How many squares can he make? Write and solve the number fact you used to find the answer.
5 consecutive intergers whose sum is 195
The price of a new computer is p dollars. The computer is on sale for 40% off. Which expression shows the savings that are being offered on the computer? p
The Latin American revolutions from 1804 to 1821 were
How can you write 72+(8+19) to make it easier to add
Which of the following terms best describes what an economy experiences when the prices of goods and services increase and the value of currency decreases?