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

User Party Ark
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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)-example-1
User Tom Swirly
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