When a=0, x+I = 0, x =- I don't meet the question.
So a is not equal to 0.
a( 1+I)x2+( 1+a2i)x+a2+I
=ax^2+x+a^2+i(ax^2+a^2x+ 1)
=0
rule
ax^2+x+a^2=0
ax^2+a^2x+ 1=0
a^2= 1
A=- 1 or 1
Discriminant = 1-4a 3 > =0: a =
Discriminant = a4-4a > 0: a > = 2 (2/3) or a
So a < 0
So a=- 1 is the solution of this problem.
How many courses are there in grade one? What are they?
Senior one has 1 1 courses, which are Chinese, mathematics, English, morality and