Answer:
y = (x + 1)(x - 0.586) ( x - 3.414)
Step-by-step explanation:
I sure wouldn't recommend doing this by trial and error.
I made a graph of which you can see. Every time this monster touches the x axis and speeds away upward is two equal roots of y. So the square root would be one of each of them.
y = (x + 1)^2 (x - 0.586)^2 (x - 3.414)^2
are the listed roots.
The square root is
y = (x + 1)(x - 0.586) ( x - 3.414)
Do I know that this is right? I don't. But I can tell you this: if you multiply 1^2 * (-0.586)^2 * (- 3.414)^2
you get 4 just as you should. Amazing that we have tools that do that sort of thing.
Answer:
- <u>80 mi²</u>
- <u>63 in²</u>
- <u>32 m²</u>
- <u>44 cm²</u>
- <u>59.5 ft²</u>
- <u>48 km²</u>
Step-by-step explanation:
<u>Q1</u>
- 8 x 4 + 12 x 4
- 32 + 48
- <u>80 mi²</u>
<u>Q2</u>
- 5 x 3 + 12 x 4
- 15 + 48
- <u>63 in²</u>
<u>Q3</u>
- 4 x 2 + 8 x 3
- 8 + 24
- <u>32 m²</u>
<u>Q4</u>
- 10 x 4 + 2 x 2
- 40 + 4
- <u>44 cm²</u>
<u>Q5</u>
- 5 x 2 + 11 x 4.5
- 10 + 49.5
- <u>59.5 ft²</u>
<u>Q6</u>
- 3 x 1 + 9 x 5
- 3 + 45
- <u>48 km²</u>
Answer:
d. 20
Step-by-step explanation:
The given question implies 5 permutation 2, i.e 
.
But,

= 
So that for 
, n = 5 and r = 2.

= 
= 
= 
Cancel out 3 and 2 with respect to the numerator and denominator.

= 5 * 4
= 20
Therefore,

= 20
So that the correct option is D.