8X - 6X = -18
2X = -18
X = -9.
Hope this helps!
This is a combination question
Hope this helps
Answer:
2500
Step-by-step explanation:
Let the first square number be
then the next square number is
.
The difference between these two consecutive numbers is 99.
This implies that:

We expand to get:

Simplify:


Divide both sides by 2

Therefore the value of the larger perfect number is
.