Simplify i^2*7

Problem

i2⋅7

Solution

1. Identify the value of the imaginary unit i By definition, i is the square root of −1

2. Substitute the value of i2 into the expression. Since i=√(,−1) it follows that i2=−1

3. Multiply the resulting constant by 7

Final Answer

i2⋅7=−7

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