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Mathematics 21 Online
OpenStudy (anonymous):

simplify(-1+6i) + (-4 + 2i)

OpenStudy (anonymous):

well you know that i^2 = -1 right?

OpenStudy (anonymous):

just foil like how you've done it before

OpenStudy (anonymous):

can you show me an example with a similar problem?

OpenStudy (anonymous):

ok well its like this Ex: (-x + 2)(-x + 2) x^2 - 2x -2x + 4 x^2 - 4x + 4

OpenStudy (anonymous):

the i's are confusing me

OpenStudy (anonymous):

and for your question its the same steps

OpenStudy (anonymous):

5 + 8i?

OpenStudy (anonymous):

ok ill show you step by step First, you must write the equation on paper (-1+6i)(-4 + 2i) Then, you just foil like how i showed you as an example 4 - 2i - 24i + 12i^2 Finally, you add and subtract like terms 4 - 26i + 12i^2 ans i told you i^2 = -1 4 - 26i -12 -8 - 26i

OpenStudy (haseeb96):

(-1+6i) + (-4 + 2i) -1 + 6i -4 +2i -5 +8i now rationalize it by -5 -8i and get the answer

OpenStudy (anonymous):

or that

OpenStudy (anonymous):

thanks I got it

OpenStudy (haseeb96):

good job @Mariah12345

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