Asked by Sara

Form a quadratic equation ax^2+bx+c=0 with a=1 that has the given roots:

1± 2

Answers

I assume the 1+ - 2 comes from the quadratic formula?
Please advise...
Answered by Reiny
A quadratic can have at most 2 roots.
1± 2 to me means 3 or -1
so the quadratic could b a(x-3)(x+1) = 0
but you said that a=1 , so
(x-3)(x+1) = 0
x^2 - 2x - 3 = 0
Nice explanation Reiny...
I wondered why the +- would be in the question.
No worries ... she has more of them for you to work on : )
Yours in Mathematical fun, Ms Pi
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