Please show me the step by step process to drive the value of x from following equation
 
(4x-5)(2x-5)=105

Asked by SATYEN | 15th May, 2017, 12:11: AM

Expert Answer:

begin mathsize 16px style left parenthesis 4 straight x minus 5 right parenthesis left parenthesis 2 straight x minus 5 right parenthesis equals 105
rightwards double arrow 8 straight x squared minus 20 straight x minus 10 straight x plus 25 equals 105
rightwards double arrow 8 straight x squared minus 30 straight x minus 80 equals 0
rightwards double arrow 4 straight x squared minus 15 straight x minus 40 equals 0
The space roots space of space this space quadratic space equation space are space not space real. end style

Answered by Rashmi Khot | 15th May, 2017, 08:55: AM