20 ÷ 2 (5,5)
20 ÷ 2 (25)
20 ÷ 50
.4
1. Atoms 2. electrons, 3. protons and neutrons 4. Static, 5. Gains.
Let the two required numbers be x and y, then x - y = 176, thus y = x - 176.
Let the product of the two numbers be represented by

For the product to be minimum,


Thus, y = 88 - 176 = -88
Therefore, the two numbers are 88 and -88.
First think of the form a^2 + 2c + c^2
c in the question is clearly 3.
So we need first to add 8 for both sides to get rid of -8 and then add 9 to complete the square.
So it will be (x^2+3)^2 = 17
So the choice number 3 is the answer.
Hope this helps!