How i can do this? (7-i)(7+i)

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asked Nov 15, 2023 11.0k views

1 Answer

Tom Swirly · Answer 1 · 2023-11-21T06:36:34+0000

You can do the box method A or foil method B. Both will give you the same answer. Remember thst -i^2 is always 1 that’s how we got 50. By combining like terms, 7i & -7i will get canceled out.

How i can do this? (7-i)(7+i)

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