I wonder what the best way of explaining this is? You could graph the results for each choice. Or you could reason it out.
The first thing you have to do it deal with y = 3. Draw a really crude graph like a set of axis. Make the y values go from -5 to + 5. x for the moment does not matter.
Draw a horizontal line through y = 3 or going through the point (0,3). Now here's the catch and you're going to have to read it very carefully.
Condition One
If a>0 then the graph opens upward and b is going to have to be less than 3. That sentence is an absolute nightmare. Think carefully about what a>0 means. Make it 2 and draw a rough graph opening upward on the crude axis you have drawn. b is the y value of the minimum, so that minimum has to be less than 3. Are there any point like that? The two points where a>0 are C and D.
C
The lowest point that C will hit is 4. That's not good enough. b = 4 is the lowest y value. C is not the answer
D
The lowest point is 3. The graph will just touch y = 3. That's not good enough either. Touching y = 3 does not produce 2 roots. It produces just one.
Condition Two
a < 0 Here the graph opens downward. It means the a<0 and b>3. You need to look at A or B. Which point does that? A has a maximum below 3. It's no good. A is wrong.
So the answer must be B. a<0 and b>3. Right on 2 solutions.
C. 10 cm
To understand the given problem use the formular of area.
Hence, area is the length and width of the object in unit squared.
Mathematically expressing, a = l x w
Since a = l x w
a = lw unit squared
Given:
Area = 112 cm2
Square root of Area = Square root of 112 cm2
Area = 10.58 cm
Check:
Area = (10.58 cm)^2
Area = 111.9 / 112
Answer:
Step-by-step explanation:
The given expression is 
.
Since, 
And 
Expression will become,
Therefore, Simplified form of the given expression will be .
Answer:
<h2>The answer would be negative five over one or -5/1 </h2>
