28.10x^(2)-9x-7

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factorize the given expression 10x^2-9x-7

Resolve into partial fractions : (10x+30)/((x^(2)-9)(x+7)).

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Evaluate: lim_(x rarr(7)/(2))(2x^(2)-9x+8)^(cot(2x-7))

Evaluate lim_(xto7//2) (2x^(2)-9x+8)^(cot(2x-7)).

"If" log_((3x-1))(x-2)= log_((9x^(2)-6x+1))(2x^(2)-10x-2) , then x equals-

lim_(x rarr oo)(9x^(2)-2x-7)/(6x^(2)+5x+1

Simplify the following : 5x^(4) - 7x^(2) +8x - 1 +3x^(2) - 9x^(2) + 7 - 3x^(4)+11x - 2 +8x^(2)