What is x^2-9x+4=0? .. i’m using this method: (x+b)^2-b^2=x^2+2bx

see explanation

Step-by-step explanation:

Given

x² - 9x + 4 = 0 ( subtract 4 from both sides )

x² - 9x = - 4

Using the method of completing the square

Add ( half the coefficient of the x- term )² to both sides

x² +2 (- )x + = - 4 +

(x - )² =

Take the square root of both sides

x - = ± = ±

Add to both sides

x = ± ← exact solutions

you didn't give me the choices, so i will just give you the graph so you can look at your choices and choose the right one.

answer:  

step-by-step explanation:

odd numbers are only divisible by 1 and itself.

even numbers are divisible by more than 1 and itself.

for example 6 is even because it is divisible by more than 1 and its self. 1 x 6= 6 ; 2 x 3= 6

and 7 is odd because only 7 x 1 equals seveb