Answer:
D
Step-by-step explanation:
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Put it in the form
ax^2 + bx + c = 0
use the quadratic formula
x = [ -b + sqrt( b^2 - 4 ac ) ] / 2a
x = [ -b - sqrt( b^2 - 4 ac ) ] / 2a
7v^2 - 7v - 22 = 0
a = 7
b = -7
c = -22
v = [ 7 + sqrt ( 49 - 4 * 7 ( -22) ] / 2 * 7 = 2.34
v = [ 7 - sqrt ( 49 - 4 * 7 ( -22) ] / 2 * 7 = -1.34
What is the whole question
For two complex numbers
and
, the product is
That is, you multiply the moduli and add the arguments. You have
and
, so the product is
4.8 is the answer hahehehehehehe sorry jus needs to be this many characters long