49.8k views
5 votes
If a number is increased by 4, its square is increased by 64. Find the number

User Madi
by
7.6k points

2 Answers

4 votes

Answer:

6

Explanation:

(n + 4)^2 = n^2 + 64

n^2 + 8n + 16 = n^2 + 64

8n = 48

n = 6

User Engineero
by
6.7k points
6 votes

Answer:

12

Explanation:

12 - 4 = 8

The square of 8 is 64

User Derek Foulk
by
7.8k points