2 answers:
Answer:
x^2+2x+2
Step-by-step explanation:
to find b in the equation :
b^2<4ac when having two complex roots
the required equation is x2 - Sx + P = 0
the sum of the roots :-1-i+-1-i=-2
the product=2
so the equation: x^2-(-2)x+2
x^2+2x+2
Answer:
<h2>x² + 2x + 2 = 0</h2>
Step-by-step explanation:
Formula for finding a quadratic equation when its roots are given is
x² - ( sum of roots)x + product of roots=0
The roots are
- 1 + i
- 1 - i
Sum of roots is = - 1 + i - 1 - i = -2
Product of roots is = ( -1 + i)(- 1 - i)
= 1 + 1 = 2
So the quadratic equation is
x² - (-2)x + 2 = 0
<h3>x² + 2x + 2 = 0</h3>
Hope this helps you
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Answer:
Transcribed Image Text from this Question. 13. Find the perimeter of the quadrilateral whose vertices are as follows. +F (-1,1).(-2,4).(-4,2),(-3,-1) ...
Answer:
718
Step-by-step explanation:
It can be done this way:
4% of 50.0 is 2.0
4% of 900 is 36
4% of 7000 is 280
4% of 10,000 is 400
add them all up and we have:
400 + 280 + 36 + 2 = 600 + 110 + 8 = 718
Answer:
the 3rd one
Step-by-step explanation:
Answer: a=5+√5
b=5-√5
Step-by-step explanation:
a=?
b=?
P=20
A=20
P=a*b=20
A=a+b=20
------------------
ab=20
a+b=10
--------
a=10-b
(10-b)b=20
-b²+10b-20=0
b=-10±√100-80/-2
b=-10±√20/-2
b=-10±2√5/-2
b=-10-2√5/-2=5+√55
b=5-√5
a+b=10
a+5-√5=10
a=5+√5
a+5+√5=10
a=5-√5
Answer:
If the length of each side of a triangle is doubled then its perimeter is also doubled.
