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If alfa and beta are zeros of the polynomial x2-2x-15. Then form a quadratic polynomial whose zeros are 2alfa and 2beta

Posted by Sneha Mohabe 4 years, 7 months ago

CBSE > Class 10 > Mathematics

1 answers

Winn Still 4 years, 7 months ago

After factorising the equation you'll get the 2 zeros i.e +5 & -3. Then, put these values in the another condition you'll get 2alfa= 5×2=10 and 2beta=2×(-3)=-6. Now putting these values in the form of -b/a and c/a we get: -b/a=4 & c/a=(-60). Therefore, the required equation will be x²-4x-60.

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