Factorise 3c squared-4c+1

(c-1)(3c-1)

Step-by-step explanation:

3c² - 4c +1

get rid of square and write like this : (3c ... )(3c   )

you need to din what multiplies to (3 x 1) = 3 but also adds to -4

-3 + -1 = -4

-1 x -1 = 3

put into the brackets

(3c -3 )(3c-1 )

simplify

(c-1)(3c-1)

25 questions , because they start with 100.  

350-100=250 .  

. 250/10=25

step-by-step explanation:

first take off 100, then what x 10 = 250? that is your answer. (25)

check above link.

graphically?   well, you graph them both, the solutions is where they both intersect each other, since there are two solutions, meaning they will meet twice, or namely the linear will run into the quadratic curve twice, and where they meet, those x,y coordinates are the solutions to the system.