| No, the first answer should definitely be 2/3, because the bracket is 5/3. With a struggle, I solved Q8 mentally. x = -1 or (3+sqrt(89))/8 or (3-sqrt(89))/8. I typed these in, only to find you've ignored the easy one and rounded the irrational roots to 2 d.p. How were we to know that? Q4 has no rational roots and only one real, therefore is too difficult without a calculator. You give it too many roots (as mentioned by ostroffj) and all of them are wrong. The quartic with the roots you claim for Q4 would be x^4 - 2x^3 - 13x^2 + 38x -24 |