The sum of two squares cannot be factored. It can be represented thus:
a^2 + b^2 = (a + bi)(a - bi)
In this expression, the i is the symbol for the imaginary number the square root of -1.
A squared + B squared = C squared.
Assuming A, B, and C are the three sides of a right triangle, also assuming C is the hypotenuse.
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you use A squared plus B squared equals C squared
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This expression can be factored. ab + 3a + b2 + 3b = a(b + 3) + b(b + 3) = (a + b)(b + 3)
The sum of two squares cannot be factored. If that's -a^2 + b^2, that's b^2 - a^2, which factors to (b - a)(b + a)
It's the square root of a2+b2. It cannot be simplified. It is NOT a+b. The answer is c square.