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secondary 2 | Maths
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Date Posted: 5 years ago
Views: 233
There is a difference between
1. The square of the sum
2. The sum of the squares
If a and b are the numbers, then
1. The square of the sum is (a + b)^2 (sum first, then square)
2. The sum of the squares is a^2 and b^2 (square first, then sum)
Of course, (a + b)^2 is not equal to a^2 + b^2.
1. The square of the sum
2. The sum of the squares
If a and b are the numbers, then
1. The square of the sum is (a + b)^2 (sum first, then square)
2. The sum of the squares is a^2 and b^2 (square first, then sum)
Of course, (a + b)^2 is not equal to a^2 + b^2.
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