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Please help me, this problem is driving me crazy. Simplify 4 over the quantity of negative 2 minus 2i.
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\[4 \over -2-2i\]
@rainstorm12
multiply top and bottom of the fraction by the complement of -2 - 2i which is -2 + 2i this removes the imaginary part of the complex number from the denominator
ok, what is 2i multiplied by 2i btw?
i^2 = -1
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4- 2i^2 = -8 + 8i
is that right so far?
thats correct for the numerator
(-2 - 21)(-2 + 2i) = ?
that should be an i not a 1
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idk what 2i multplied by 2i is
its -2i * 2i -2 * 2 = -4 and i^2 = -1
so it equals -1 *-4
by definition i = sqrt(-1) so i^2 = -1
i keep coming to a solution of i = 1
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