Amy bought a necklace that had an original price of $20. She used a 30% off coupon. The tax rate was 7.5% (added after the disco
2 answers:
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Answer:
Solution given:
-2x²+7x-6=0
2x²-7x+6=0
Comparing above equation with ax²+bx+c
we get
a=2
b=-7
c=6
By using Vieta's theorem
X1+X2==
again
X1X2==
=3