find the value of x, if 7^x-3*5^2x-8= 1225
Answers
Answered by
3
Try it with a hit and trial method I guess that te easiest way assume te values of x
1. You cannot put such value which makes it to negative power like 1 for say 1-3 would make it to -2
And not even three coz the number you need is a large one and taking three would make it to 7^0 so it should be greater than 3 for sure
2. Now look at second one you knw that ye value should be greater than 3 but what take it 4 but again that will make it 5^0 so assume 5
7^5-3 is 49
5^2(5)-8 is 25
So 49*25 gives value
Hope it was helpful to you!!
1. You cannot put such value which makes it to negative power like 1 for say 1-3 would make it to -2
And not even three coz the number you need is a large one and taking three would make it to 7^0 so it should be greater than 3 for sure
2. Now look at second one you knw that ye value should be greater than 3 but what take it 4 but again that will make it 5^0 so assume 5
7^5-3 is 49
5^2(5)-8 is 25
So 49*25 gives value
Hope it was helpful to you!!
Similar questions