Grade 12th passAlgebra
What is the positive difference of the root of x2-7x-9=0
What is the positive difference of the root of x2-7x-9=0
1 Answer
Aastha Singh
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
x2−7x−9.
a+β=7,aβ=−9
(a−β)2=(a+β)2−4aβ
=49+36=85
hence , a−β=85
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algebra
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