Show that 1 + i10 + i20 + i30 is a real number?
Solve the quadratic equations by factorization method only 6x2 – 17ix – 12 = 0
Solve the quadratic equations by factorization method only x2 + (1 – 2i)x – 2i = 0
Solve the quadratic equations by factorization method only x2 + 10ix – 21 = 0
Solve the quadratic equations by factorization method only 17x2 – 8x + 1 = 0