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a & b are the o's of polynomial x²-6x+k where 3a+4b=10 find the value of k?

Posted by Raj Raj 6 years, 10 months ago

CBSE > Class 10 > Mathematics

3 answers

Raj Raj 6 years, 10 months ago

3a+4b=10 equation. 1 a+b=-b/a a+b=6 equation 2 Multiply 2nd eq by3 3a+3b=18 By eliminate equ1&2 remain b=-8 By putting the value of b in equ1 we get a=14 ab=c/a 14×-8=k K=-112

0Thank You

Puja Sahoo? 6 years, 10 months ago

K=-112

2Thank You

M A Santos 6 years, 10 months ago

K=5

0Thank You

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CBSE > Class 10 > Mathematics