22 + 32 + 52 + 72 = 4 + 9 + 25 + 49 = 87
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The question is ambiguous.Does it want the sum of the squares, or the square of the sum ? They're different.Here are both:1). Sum of the squares: . (1)2 + (2)2 + (3)2 + (4)2 + (5)2 = 1 + 4 + 9 + 16 + 25 = 552). Square of the sum: . (1 + 2 + 3 + 4 + 5 )2 = (15)2 = 225
The sum of 3 and a number, equaling 5, (if you want to know what the number is...) is 2 3+2=5
25= 5*5 = (3*3)+(4*4)
How can anyone have doubt in this question. Square of 3= 9 Square of 5= 25 Square of 7= 49 Total is = 83
5 and 3 5 + 3 = 8 5 - 3 = 2