algebra

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y^4-14y^3+49y^2
y^2(y^2-14y+49)
y^2(y-7)^2

if you solve a problem like this ^ then how do you solve this:

x^2-4x+4

?????

  • algebra -

    x^2-4x+4
    = (x-2)^2

    how come you got the hard one, but missed the easy one?

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