callaway12x callaway12x

01-03-2017
Mathematics

Answered

What number should be added to the expression x2 + 4x to change it into a perfect square trinomial?

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morgaine816 morgaine816

01-03-2017

Then you have x^2+4x+4 which gives you (x+2)(x+2) when you factor it.

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michelpantoja07 michelpantoja07

01-03-2017

ax^2+bx+x=0 so divide it by two
x^2+4x+4(b=4, 4/2 is 2 and 2^2 is 4 that's the number

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