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Grade: 12th pass

                        

What is the positive difference of the root of x2-7x-9=0

one month ago

Answers : (1)

Aastha Singh
askIITians Faculty
210 Points
							Quadratic equation is
x2−7x−9.
a+β=7,aβ=−9
(a−β)2=(a+β)2−4aβ
=49+36=85
hence , a−β=85​
one month ago
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