Koljeg
Koljeg
16-07-2014
Mathematics
contestada
(2+7i)(2-7i)= ==========
Respuesta :
Ryan2
Ryan2
16-07-2014
[tex](2+7i)(2-7i)=4-14i+14i-49i^2\\ \\ 4+49=53[/tex]
Answer Link
Аноним
Аноним
16-07-2014
[tex](2+7i)(2-7i)=2^2-(7i)^2=4-49\vfot(-1)=4+49=53\\\\-------------------------------\\i=\sqrt{-1}\\\\i^2=-1[/tex]
Answer Link
VER TODAS LAS RESPUESTAS ( 82+ )
Otras preguntas
After reading the poem, it’s reasonable to infer that Emma Lazarus likely believed that immigrants
A blueprint that defines the behavior of types, methods, and events is
The ratio of boys to girls in a class is 7:5 .There are 36 students in the class .How many more boys than girls are there !!! 12p
What signals you that factoring by grouping is the best method to use when factoring a problem? How would you know if it is factorable or prime? Factor the fol
In order to make discriminatory ideas and behavior seem reasonable and normal, a few societies invoked popular ideas about racial differences known as
Two events in space are described below. Event 1: The moon, the sun, and Earth are aligned along a straight line with the moon in the center, and the moon comp
Which nations fought the French at the battle of nations
Help me please! The following sentences test your knowledge of grammar, usage, and word choice. Some sentences are correct. No sentence contains more than one e
Assume that the starting point of a path in such a grid is labeled the origin ≡ (0,0). the destination is the point (m,n). in other words, there are (n+1) stree
9 + (1/2)^4x48 I couldn't find a correct answer for this.
