Grade 11Algebra
if the equation x^2+ax+b=0 and x^2+a'x+b'=0 have a common root,then this common root is equal to
if the equation x^2+ax+b=0 and x^2+a'x+b'=0 have a common root,then this common root is equal to
1 Answer
Arun
Dear student
subtracting equation 1 from 2
(a’ – a) x + (b’- b) = 0
x = – (b’ – b) / (a’ – a)
this is the common root.
Hope it helps
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