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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______?


1)    x²-2x-15=0
                   x-5=0    x+3=0
                   x-5=2a  x+3=2b
                    x=2a+5 x=2b-3
0 0 0
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