x²1.1 1-1 The need for the imaginary number and the powers of i1-1 The need for the imaginary number and the powers of i1.1Learn
1.2 1-2 The complex number: equality, addition and multiplication1-2 The complex number: equality, addition and multiplication1.2Learn
(a+b)1.3 1-3 The conjugate and the division of complex numbers1-3 The conjugate and the division of complex numbers1.3Learn
1.4 1-4 Solving the quadratic equation with the general formula1-4 Solving the quadratic equation with the general formula1.4Learn
1.5 1-5 The discriminant and the nature of the two roots1-5 The discriminant and the nature of the two roots1.5Learn
1.6 1-6 Finding an unknown coefficient from a condition on the roots1-6 Finding an unknown coefficient from a condition on the roots1.6Learn
1.8 1-8 Forming the quadratic equation from its roots1-8 Forming the quadratic equation from its roots1.8Learn
a×b1.11 1-11 Applications: radicals and verbal problems1-11 Applications: radicals and verbal problems1.11Learn