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(x-3)(x-5)-(2a+1)/(a^(2))...

`(x-3)(x-5)-(2a+1)/(a^(2))`

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Use suitable identities to find the following products (i) (x +5) (x +2) (ii) (x-5) (x-5) (iii) (3x +3) (3x -2) (iv) (x ^(2) + (1)/( x ^(2)) )(x ^(2) - (1)/( x ^(2))) (v) (1+x) (1+x)

If y=x+(x^(3))/(3)+(x^(5))/(5)+…oo , show that (dy)/(dx)=(1)/(1-x^(2)) .

Knowledge Check

  • If 1/((x-2)(x-3))+1/((x-3)(x-4))+1/((x-4)(x-5))=1/6 , then the value of x will be :

    A
    8, -1
    B
    8, 1
    C
    `-8, 1`
    D
    `-8, -1`
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