What is the nature of The roots of the quadratic equation 9x²-12x-4=0
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Answered by
1
9x²-12x-4=0
solution:
a=9
b=-12
c=-4
we know that,
d= b²-4ac
=(-12)²-4×9×-4
= 144-144
= 0
the value of d is equal to zero,hence this equation has real and equal roots....
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Answered by
1
Answer:
D=b^2-4ac
=12^2-4(9)(-4)
=144-144
=0
since D is zero
therefore,roots are equal and real.
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