A few days ago
Given that the equation x^2 – 3bx + (4b+1) = 0 has a repeated root, find the possible values of the constant b
please help me, thankyou.
Top 2 Answers
A few days ago
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Sorry, I may have a 98 average, but I am only in 8th grade. I can solve equations that are a little more simple, though.
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A few days ago
find the discrimination and put it 0.
that is, (-3b)^2 – 4(4b+1) = 0
9b^2-16b-4=0
solve it you will get b=2 or b=-2/9
discrimination>0 two real roots; discrimiation=0 repeated root; discrimination<0 no real root. Can you remember?
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