Class 11Mathematics1 Complex Numbers and Quadratic Equations: Complex NumbersIntegral 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$28+14i$
Explore More
Similar Questions
If $x = \frac{5}{1-2i}$,where $i = \sqrt{-1}$,then the value of $x^3 + x^2 - x + 22$ is
The value of $\theta$, for which $\frac{2+3i \sin \theta}{1-2i \sin \theta}$ is purely imaginary, where $i=\sqrt{-1}$, is
The real values of $x$ and $y$ for which the equation $({x^4} + 2xi) - (3{x^2} + yi) = (3 - 5i) + (1 + 2yi)$ is satisfied,are
Medium
View SolutionLet ${\left( { - 2 - \frac{1}{3}i} \right)^3} = \frac{{x + iy}}{{27}}$ where $i = \sqrt{-1}$ and $x, y$ are real numbers,then $y - x$ equals
DifficultJEE MAIN 2019
View SolutionIf $\frac{(1+i) x-i}{2+i}+\frac{(1+2 i) y+i}{2-i}=1$,then $(x, y)$ is equal to
DifficultTS EAMCET 2013
View SolutionVedclass Products
For Students
Vedclass Test Series
Mock tests in real JEE/NEET style with performance analysis. 5-day free trial.
Start Free TrialFor Teachers
Exam Paper Generator
Generate Set A/B/C/D exam papers from 7.5L+ questions in 2 minutes. 3 chapters free.
Try FreeFor Institutes
Online Exam Module
Live online exams with unlimited students, 360° analytics & white-label branding.
See Demo