a. 
b. x = ∛-1 and -3
<h3>How to expand the expression</h3>
a. Given
(x² + 2)²
First, we open up the bracket
Multiply through
Collect like terms
b. Let's factorize
Find the factors of 3 that are products of 4, they are 3 and 1
Use it to replace 4x as 3x and x
Let's make the expression two
Find the common factor
So,
and 
and x = -3
Thus, x = ∛-1 and -3
Learn more about factorization here:
brainly.com/question/25829061
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Is that the full question? I simplified it to 2x^2 -5x +18 when you plug x+3 in for the variable (x) in the expression. I’m honestly not sure when to go from there. Hope that helps with something. Sorry I couldn’t do more
To find the slope of the line containing the pair of points, subtract y2 to y1 and divide x2-x1.
y2-y1
--------
x2-x1
This is the concept of linear proportionality;
We are required to find the height of the tower in feet. The height of the tower will be found as follows;
[height of tower]/[length of the shadow of tower]=[height of post]/[length of shadow of the post]
height of the tower =h
height of the shadow=100ft
height of post=4 ft 6in=4 1/2 ft= 9/2 ft
length of the post's shadow=3 ft 4 in 3 1/3 ft=10/3 ft
N/B 1 ft= 12 inches
thus;
h/100=(9/2)/(10/3)
multiplying both sides by 100 we get:
h=(9/2)/(10/3)*100
h=9/2*3/10*100
h=135 ft
the answer is 135 ft
Answer:
300
Step-by-step explanation:
3x = 150
6x = z
Z=6x*150/3=300
