SOLUTION: Find the last term to make the trinomial into a perfect square: x^2-1x

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Question 1147942: Find the last term to make the trinomial into a
perfect square: x^2-1x
Found 2 solutions by MathLover1, ikleyn:
Answer by MathLover1(20850) About Me  (Show Source):
You can put this solution on YOUR website!
Perfect-square trinomials are of the form:
a%5E2x%5E2+%2B-+2abx+%2B+b%5E2
and are expressed in squared-binomial form as:
%28ax+%2B-+b%29%5E2

you have x%5E2-1x, so a=1 and 2ab=1
take 2ab=1 and plug in a=1, then solve for b
2%2A1%2Ab=1
b=1%2F2

so, the last term to make the trinomial into a perfect square is b=1%2F2


Answer by ikleyn(52855) About Me  (Show Source):
You can put this solution on YOUR website!
.

The correct  ANSWER  is :  " the last term to make  x%5E2+-+x  a perfect square is  1%2F4 ".



CHECK.   x%5E2+-+x+%2B+1%2F4 = %28x-1%2F2%29%5E2.