find the discriminant of quadratic equation 9x²-1=0
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Answer:
answer is ±1/3
Step-by-step explanation:
9x²-1 =0
b²-4ac =0-4(9)(-1)
= 36
D= -b±√b²-4ac / 2a
= -0±√0-4×9×-1 /2×9
= ± √36/18
±1/3
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