1.2 1.3 Solve for x and y simultaneously 4x+y= 2 and y² + 4x-8=0 The roots of a quadratic equation are given by -4 ± √(k+1)(-k + 3) 2 1.3.1 If k= 2, determine the nature of the roots. 1.3.2 Determine the value(s) of k for which the roots are non-real 1.4 Simplify the following expression 24+1.5.102-1 1.4.1 203 (5) (3) (4)