Question

1.Write the coefficient of x2 in the expansion of (x - 2)3.
2.Simplify √45 - 3√20 + 4√5
3. Rationalise the denominator of
of
√40/√3

4.Locate √3 on the number line.
5. Find the remainder when x3 – ax2 +6x – a is divided by (x-a)
          solve it with solution.

Answer 1

1)the coefficient of x2=-6
2)-25/4
3)root of 40*3/3
5)quotient =x2+6 and remainder =5a
and verify this answer by division algorithm that is
dividend =divisor *quotient +remainder