I am stuck on solving the problem below, writing the answers in standard form of a complex number, can you also show how it is worked out, thanks in advance. (2 + 5i) (i  4) = (2 + 5i) (i  4)
= 2(i)  2(4) + 5i(i) + 5i(4) {used foil method} = 2i + 8 + 5i2 20i {multiplied through} = 5i2 22i + 8 {combined like terms} = 5(1)  22i + 8 {i2is 1} = 5  22i + 8 {multiplied 5 by 1} = 3  22i {combined like terms}  Algebra House
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