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Grade: 11
        If the roots of the equation p(q-r)x^2+q(r-p)x+r(p-q)=0 are equal.show that 1/p+1/r=2/q.
one year ago

Answers : (1)

Ram Prakash Verma
26 Points
							Take x = 1Root × root = coffeicient of x ÷ coffeicient of x^2r(p-q) = q(r-p)rp+pq= 2prDivide whole by pqr1/p + 1/r = 2/q.........................................
						
one year ago
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