The quadratic has one root with multiplicity 2 if the discriminant is 0, which is

(That is, for a quadratic
, the discriminant is
.)
Set the discriminant equal to 0 and solve for
:





The two numbers that add up to get -1 and multiply to get -20 are -5 and 4
-5*4=-20
-5+4=-1
I hope this helps
Answer:
The correct answer is three full teaspoons, assuming US measurements.
Step-by-step explanation:
15ml = 3.04326 teaspoons. To do this yourself, divide the volume value by 4.929
Answer:
can you give me some hint.
Answer:
The solution is
. Fourth option
Explanation:
Solve for x:

Move all the terms from the right to the left side of the equation, a zero in the right side:

Join all like terms:

The general form of the quadratic equation is:

Solve the quadratic equation by using the formula:

In our equation: a=1, b=-2, c=-46
Substituting into the formula:



Since 188=4*47

Take the square root of 4:

Divide by 2:

First option: Incorrect. The answer does not match
Second option: Incorrect. The answer does not match
Third option: Incorrect. The answer does not match
Fourth option: Correct. The answer matches exactly this option