7√(-63) - 4√(-28) = 7√63 i - 4√28 i
= 7√9√7 i - 4√4√7 i = 21√7 i - 8√7 i
= 13√7 i
Lauren W.
asked • 04/17/177 sqrt (-63) - 4 sqrt (-28) #simplify the expressions.
7 sqrt (-63) - 4 sqrt (-28) #simplify the expressions.
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