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If one zero of the polynomial …

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If one zero of the polynomial xpower2 + a is -3 then find other zero?

Posted by Royal Boy Alok 7 years, 4 months ago

CBSE > Class 10 > Mathematics

3 answers

Soham Deshpande 7 years, 4 months ago

P(x)=x^2+a Given that one zero or root is -3 Then put -3 instead of x (-3)^2+a=0 9+a=0 a=-9

Mohnish Hari 7 years, 4 months ago

x2 +a+3=0 a=x x2+x+3=0 D = 1-4×1×1=3 X = -1+√3/2 & -1-√3/2

Sakshi Singh 7 years, 4 months ago

Putting x= -3 we get a= -9 After factoring it i.e. (x-3)(x+3) We get +3 is another zero

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