Answer:
X = 9 or x = -9
Step-by-step explanation:
We want to solve the quadratic equation

We shall use the square root method
Let us add 4 to both sides to get:


We take square to get:


The solution is x=9 or -9
53-(64:8)+102=53-8+102=147
The author rounded to the hundred thousands place.
I hope this helps have a good day
Answer:
b) y - 8 is one of the factor of the given expression
Step-by-step explanation:
<u><em>Explanation</em></u>:-
Given expression y² - 16 y + 64
⇒ y² - 8 y - 8 y + 64
⇒ y ( y- 8) - 8 ( y - 8)
⇒ (y-8)(y-8)
Therefore (y -8) is one of the factor