Question

If 25 is subtracted from a square of a positive integer the result is 200 find the positive integer

Answer 1

Answer:

15

Step-by-step explanation:

Put it as an equation with x the positive integer so you have

x²-25=200

add 25 on each side : x²=225

now $x=\sqrt{225},\:x=-\sqrt{225}$

but x is positive so $x=\sqrt{225}=15$