deidrasolada deidrasolada

27-05-2016
Mathematics

Answered

how can I make this a perfect square

w^2-4w+

Verified Answer :

apologiabiology apologiabiology

27-05-2016

ax^2+bx+c
if a=1, then
take 1/2 of b and square it

w^2-4w+c
b=-4
-4/2=-2, (-2)^2=4
add that
w^2-4w+4
(w-2)(w-2)
(w-2)^2

to make it into perfect squres, add 4

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