Given

We have to set the restraint

because a square root is non-negative, and thus it can't equal a negative number. With this in mind, we can square both sides:

The solutions to this equation are 7 and -2. Recalling that we can only accept solutions greater than or equal to -1, 7 is a feasible solution, while -2 is extraneous.
Similarly, we have

So, we have to impose

Squaring both sides, we have

The solutions to this equation are 5 and 10. Since we only accept solutions greater than or equal to 7, 10 is a feasible solution, while 5 is extraneous.
Answer:
Mr. Harry has 5 children.... I know what you were going for...
Answer:heya
Step-by-step explanation:
it is in the form... a raise to the power n / a raise to the power m = a raise to the power n-m..........
so 9 raise to the power 2/9 raise to the power 7= 9 raise to the power(2-7)
=9 raise to the power -5
=1/9 raise to the power 5
hope it helps
78 I think because you have to see the other 2 numbers
Answer:
3/41; 1/6 40/97
Step-by-step explanation: