alleryStart learning →Find the product (3 + 5i)(2 + 6i).
A−24 − 28i
B36 + 28i
C6 + 30i
D−24 + 28i
Answer & Solution
Correct answer: D. −24 + 28i
Real part is 3·2 − 5·6 = −24 and imaginary part is 3·6 + 5·2 = 28.
Keep practising Complex Numbers and Quadratic Equations
Browse all Complex Numbers and Quadratic Equations questions for AP EAMCET, or explore more Mathematics topics.
Related questions
If x is real and |x + 3i| = 5, which values can x take?Which property explains why (2 + 3i)(1 − i) equals (1 − i)(2 + 3i)?Because complex numbers obey the usual associative, commutative and distributive laws, whaWhat is the real part of the reciprocal of a + ib (not both zero)?If z = −z̄ for a complex number z, which statement is correct?If a complex number z equals its own conjugate, what kind of number is z?For z = a + ib, the sum z + z̄ equals what?Taking the conjugate of the conjugate of z gives which result?