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CLASS X MATHS...

1.If α and β are zeroes of the polynomial x²-2x-15 then form a quadratic polynomial whose zeroes 2α and 2β.

2.If the sum of the zeroes of the polynomial f(t)=kt²+2t+3k is equal to the product then the value of k is________?

3.Find the value of a for which (x-a) is a factor of f(x) =-x³+ax²+3x+9.

4.If x-a/b+a + x-b/c+a + x-c/a+b = 3 then the value of x is______?

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