Solve the following quadratics 17x2−8x+1=0
17x2−8x+1=0We will discriminant rule,x=−b±√D2a ...(A)where D =b2−4ac=(−8)2−4.17.1=64−68=−4from (A)x=−(−8)±√−42.17=8±2i34=4±i17∴x=417+i17,417−i17
Without solving , examine the nature of roots of the following quadratic equations:
(i) 25x2−10x+1=0
(ii) 2x2+8x+9=0