Find the value of x.
2 answers:
Answer:
x = 6
Step-by-step explanation:
The segment from O to the chord is a perpendicular bisector.
The triangle formed is right with legs x and 8 and hypotenuse 10
Using Pythagoras' identity in the right triangle, then
x² + 8² = 10²
x² + 64 = 100 ( subtract 64 from both sides )
x² = 36 ( take the square root of both sides )
x = = 6
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Answer:
Inverted parabola
Two complex solution
Step-by-step explanation:
any quadratic equation can be expressed in terms of ax^2 + bx + c = 0
It has two solutions which can be found using formula
We know that for any value inside the square root function
if it is positive its solution will be real number
for example we can have two real solution -3 and 3
if it is negative its solution will be complex number
for example we can have two complex solution
expressed in term of a + ib or a - ib
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Given in the problem
we have ax^2 - bx + c
so its solution will be
Since in this expression it is given in problem statement that b^2 - 4ac < 0 which will be a negative number and for negative number, its square root is complex number.
also X has two values as given above it will have two solution
hence it will have two complex solution based on above discussion.
Also for any quadratic equation shape of its curve if plotted on coordinate plane is parabolic.
If it has complex solution then curve of such expression will not pass through X axis