Follow the process of completing the square to solve x2 - 10x + 8 = 0. how will the left side of the equation factor in step 5? a. (x - 10)2 b. (x - 20)2 c. (2x - 10)2

(2x-10)^2

Step-by-step explanation:

Follow the process of completing the square to solve x^2 - 10x + 8 = 0

First we subtract 8 from both sides

x^2 - 10x = -8

In completing the square method we take half of coefficient of middle temr -10x  and then we square it

-10/2 = -5

(-5)^2= 25

Now we add 25 on both sides

x^2 - 10x +25 = -8+ 25

x^2 - 10x +25 = 17

Now we factor the left hand side x^2 -10x+25  

We take half of middle term -10/2  

(x-10/2)^2 that is (2x-10)^2

So the left hand side of the equation factor is (2x-10)^2

answer:  

step-by-step explanation:

here x represents the height of the pole,

and, the height of the shadow of the pole is 12 feet.

also, the angle of elevation from the top of the pole is 40°,

therefore,

by the low of sine,

which is the required equation for finding the value of x,