Answer:
x = 1
Step-by-step explanation:
When there is a "-" (minus) sign in front of parenthesis, we distribute the sign inside. Let's do this with "-(x+1)". So we will have:

Now, we follow rules of algebra. We take variables to one side and numbers to another side (remember to change signs with changing sides). Shown below:

Now, we add like terms in left side. Such as:
ax + bx = (a+b)x
Thus, we have:

Now, we add right side and divide and get a value for x:

The value of x is 1
Answer:
Cross sections perpendicular to the base and through the vertex will be triangles. Below, you can see a plane cutting through the pyramid, part of the pyramid removed, and the cross section. You could also take a slice parallel to the base. Cross sections parallel to the base will be hexagons.
Step-by-step explanation:
The answer would be (x+3)^2+4
Answer:

Step-by-step explanation:
Both 32 and 40 are divisible by 8.
32÷8=4
40÷8=5
Thus, the simplest form is 
Answer:
√20
Or
2√5
Step-by-step explanation:
It is very easy just substitute
It will be: