Determine the nature of root of the following quadratic equation
(b + c) x² (a + b + c) x + a = 0
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Determine the nature of root of the following quadratic equation
(b + c) x² (a + b + c) x + a = 0
x²b+x²c(ax+bx+cx)+a
(Ax+bx+cx)²-4(x²b+x²c)+a=0
You can solve further after solving you can know
this equation that it is equal, real, rational , irrational.
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Answered by
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Step-by-step explanation:
In the equation,
(b + c) x² + (a + b + c) x + a = 0
Discriminant,
D = (a + b + c)² - 4×(b + c)×a
= a² + b² + c² + 2ab + 2bc + 2ca - 4ab - 4bc
= a² + b² + c² - 2ab - 2bc + 2ca
= (a - b + c)²
Here, D is a perfect square. So, D>=0
=> the roots are real
if D=0 => 2 real and equal roots
if D>0 => 2 real and different roots
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