Sunday, 30 July 2023

Sumit is 3 times old as his son.Five years later, he will be two and a half times as old as his son. How old is Summit at present? (cbse 2019)


 

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Check whether 7+3x is a factor of 3x^3+7x ? [ncert]

                               Now take 7+3x=0 =>3x= -7 => x= -7/3 => If p(x)=3x^3+7x , then, => p(-7/3) = 3(-7/3)^3+7(-7/3) =...