Algebra/trigonometry
The expression (3-7i)^2 is equivilant to? i know what the answer is im just not sure how to get it please help
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Answers
The expression (3-7i)^2 is equivalent to 25 + 42i. To get this result, you can use the formula (a+bi)^2 = a^2 -b^2 + 2abi, where a = 3 and b = 7, and i is the imaginary unit. Substituting these values, we get (3-7i)^2 = 3^2 - 7^2 + 2(3)(7)i = 9 - 49 + 42i = 25 + 42i.
