Class 11Mathematics4-1.Complex numbers Integral power of iota, Algebraic operations and Equality of complex numbers
MediumExpress the given complex number in the form $a+ib:$
$3(7+i7)+i(7+i7)$
$3(7+i7)+i(7+i7)$
- A$14+28i$
- B$21+28i$
- C$7+28i$
- D$28+14i$
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