Complete the square:

X^2-18x+8=-9

x=-(-18)+divided(-18)power of 2 so on so on here this will explain it dont report me it will help you

Step-by-step explanation:

https://www.symbolab.com/solver/complete-the-square-calculator/Complete%20the%20square%3AX%5E%7B2%7D-18x%2B8%3D-9

pay attention in your classes and concentrate the best thing you can do to raise your test scores is to pay attention when you're supposed to be learning the material: in class!

take good notes.

do your homework.

use mnemonics and other tricks.

do practice tests.

note: the best i know.

c. y = 1/4 x + 5

step-by-step explanation:

first, put the equation of the line on the graph into slope-intercept form

(y = mx + b):   y = -4x + 8

second, a perpendicular line has to have "an opposite/reciprocal slope" to the original slope. so, find the "m" value in your original equation (it's -4, right? )

original slope: m = -4   perpendicular slope: change the sign to its opposite and find the reciprocal ("flip" the number)

new slope is now positive (b/c the original slope was negative 4), and it's 1/4 (not the original slope of 4 or 4/1)