Q: What are the square numbers up to 20 times 20?

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1,4,9,16,25,36,49,64,81,100,121,144,169,196,225,256,289,324,361,400 All the square numbers up to 20!

The two square numbers that add up to 225 are 144+81 = 225

the numbers in the 4 times tables up to 12 are: 4,8,12,16,20,24,28,32,36,40,44, and 48the numbers in the 5 times tables up to 12 are:5,10,15,20,25,30,35,40,45,50,55, and 60

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

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).

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1,4,9,16,25,36,49,64,81,100,121,144,169,196,225,256,289,324,361,400 All the square numbers up to 20!

The numbers are: 1 plus square root of 21 and 1 minus square root of 21

149162536496481100121144169196225256289324361400

149162536496481100121144

The numbers are (10- square root of 101) and (10+square root of 101)

The numbers are: 3 +square root 21 and 3 -square root 21

The composite numbers up to 20 are 4,6,8,9,12,14,15,16,18 and 20.

square numbers 1 to 1000

The numbers are: -2 and -20

92

67

The factor pairs of 24 are (24,1)(12,2)(8,3)(6,4)Even considering their negative counterparts, none of them add up to -20Another Answer:-The numbers are: (-10+square root of 76) and (-10-square root of 76)