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I assume by "square numbers" you mean perfect squares.
You didn't say how many of each were allowed:
1² + 1² + 1² + 1² + 1² + 1² + 1² + 1² + 1² + 1² + 1² + 1² + 1² + 1² + 1² + 1² + 1² + 1² + 1² + 1² + 1² + 1² + 1²= 23
1² + 1² + 1² + 1² + 1² + 1² + 1² + 1² + 1² + 1² + 1² + 1² + 1² + 1² + 1² + 1² + 1² + 1² + 1² + 2² = 23
1² + 1² + 1² + 1² + 1² + 1² + 1² + 1² + 1² + 1² + 1² + 1² + 1² + 1² + 1² + 2² + 2² = 23
1² + 1² + 1² + 1² + 1² + 1² + 1² + 1² + 1² + 1² + 1² + 1² + 1² + 1² + 3² = 23
1² + 1² + 1² + 1² + 1² + 1² + 1² + 1² + 1² + 1² + 1² + 2² + 2² + 2² = 23
1² + 1² + 1² + 1² + 1² + 1² + 1² + 1² + 1² + 1² + 2² + 3² = 23
1² + 1² + 1² + 1² + 1² + 1² + 1² + 2² + 2² + 2² + 2² = 23
1² + 1² + 1² + 1² + 1² + 1² + 1² + 4² = 23
1² + 1² + 1² + 1² + 1² + 3² + 3² = 23
1² + 1² + 1² + 2² + 2² + 2² + 2² + 2²= 23
1² + 1² + 1² + 2² + 4² = 23
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Which two square numbers add up to 225?
The two square numbers that add up to 225 are 144+81 = 225
What two square numbers add up to 13?
The two square numbers which add up to 13 are 9 (which is equal to 3 squared), and 4 (which is equal to 2 squared).
What are the consecutive square numbers that add up to 77?
16,25,36 add to 77. They are the squares of consecutive numbers 4,5,6
What two square numbers are add up to 45?
x2 = 45take square root of both sidesx = positive and negative square root of 45x = + and - 3√(5)Improved Answer:-9 and 36 are square numbers and they add up to 45
Which two square numbers add up to another square number?
9 + 16 = 25
What 2 numbers add up to 90 that is a square number?
92
Which two square numbers add up to 225?
The two square numbers that add up to 225 are 144+81 = 225
What are 2 square numbers which adds up to 65?
67
What two square numbers add up to 13?
The two square numbers which add up to 13 are 9 (which is equal to 3 squared), and 4 (which is equal to 2 squared).
What are the consecutive square numbers that add up to 77?
16,25,36 add to 77. They are the squares of consecutive numbers 4,5,6
What is the square numbers that add up to 80?
16 and 64
What 3 square numbers add up to 65?
68
What two square numbers are add up to 45?
x2 = 45take square root of both sidesx = positive and negative square root of 45x = + and - 3√(5)Improved Answer:-9 and 36 are square numbers and they add up to 45
What two square numbers add up to 11700?
11664 and 36
What two square numbers add up to 41?
16, 25
What do the first five square numbers add up to?
55
How do you work out add-on-agons?
the two numbers in the circles add up to the number in the square box!
