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If alpha and beta are the zeros of the quadratic polynomial p(y)=5ysquare -7ysquare +1,find the value of 1 upon alpha + 1 upon beta

Posted by Rashi Rawat 5 years, 4 months ago

CBSE > Class 10 > Mathematics

1 answers

Gaurav Seth 5 years, 4 months ago

Given f(x) = 5y^2 - 7y + 1.

Given that a,b be the zeros of the polynomial.

We know that sum of zeroes = -b/a

= > a + b = -(-7/5)

= > a + b = 7/5.

We know that product of zeroes = c/a

= > ab = 1/5

Now,

= > 1/a + 1/b = (a + b)/ab

= (7/5) * (5/1)

= 7/1

= 7.

0Thank You

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