5. Our teams excel in football and basketball
Exercise 5: Finding the Correct Form of Compound Nouns. Use a dictionary or a computer to find the
correct spelling of each of the following compound nouns. Write the correct form in the
space provided.
Example: fire-drill
fire drill
firedrill
fire drill
1. postmaster
post-master
post master
2. side-line
side line
sideline
3. son in law
soninlaw
son-in-law
4. base ball
baseball
base-ball
5. fire place
fire-place
fireplace
6. werewolf
were-woll
were wolf
7. icecube
ice-cube
ice cube
8. newspaper
news-paper
news paper
9. book mark
bookmark
book-mark
10. dogpound
dog-pound
dog pound
Answers
Answer:
factorise completely the following polynomial 3x
3
+2x
2
−19x+6
Medium
Video Explanation
Solution To Question ID 578138
Answer
Let f(x)=3x
2
+2x
2
−19x+6
Using hit and trial method,
f(1)=3+2−19+6
=0
f(−1)=−3+2+19+6
=0
f(2)=24+8−38+6=0
∴(x−2) is a factor of f(x).
3x
2
+8x−3
Now, x−2
)3x
2
+2x
2
−19x+6
3x
2
−6x
----------------------------------
8x
2
−19x
8x
2
−16x
------------------------------------
−3x+6
−3x+6
-------------------------------------
x
--------------------------------------
To factorise 3x
2
+8x−3
=3x
2
+9x−x−3
=3x(x+3)−1(x+3)
=(3x−1)(x+3)
Hence 3x
3
+2x
3
−19x+6=(x−2)(3x−1)(x+3)
Answer verified by Toppr
a,b,a,d,b
hope this helps
thanks