Answer:
x²+(1/x²) = 47
Step-by-step explanation:
by identity : (a+b)² = a²+b²+2ab
(x+1/x)²= x²+(1/x)²+2(x)(1/x)
(x+1/x)²= x²+(1/x²)+2....(1)
since : (x²+1)/x = 7
(x²/x) +(1/x) = 7
x + (1/x )= 7
put the value for : x +(1/x) in (1) :
49 = x²+(1/x²)+2
x²+(1/x²) = 47
Answer:
Replace all occurrences of y with 6x−3 in each equation.
Replace all occurrences of y in 18x−3y=9 with 6x−3 .
18x−3(6x−3)=9
y=6x−3
Simplify 18x−3(6x−3).
9=9
y=6x−3
Remove any equations from the system that are always true.
y=6x−3
Step-by-step explanation:
Answer:
54 minutes
Step-by-step explanation:
9+18+27=54
My final answer is automatic 588
The first thing you have to take into account is the definition of the axis in the complex plane.
We have then:
The vertical axis represents the imaginary part.
The horizontal axis represents the real part.
We then have the following number:
-14 - 5i
Since the real part and the imaginary part are negative, then the number is located in the third quadrant of the complex plane.
Answer:
Quadrant III.
