Answer:
1.75
Step-by-step explanation:
252x-1=400
First we need to isolate the x in one side of the equation
Lets add 1 to each side of the equation to get rid of -1
252x=441
now we divide 441 by 252 to get x
x=1.75
UPDATE
The owner of the question said its supposed to be 25^2x -1 =400
ok lets do this
25^2 * x=401
625x =401
x=.6416
