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

p^2-30p+c

k^2-5k+c

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01-12-2016
Mathematics

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

p^2-30p+c

k^2-5k+c

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apologiabiology apologiabiology · Answer 1 · 2016-12-01T08:46:28+01:00

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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

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Please help! Find the value of C such that each expression is a perfect-square trinomial. p^2-30p+c k^2-5k+c

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Otras preguntas

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

p^2-30p+c

k^2-5k+c