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)

∠cbe and ∠deb are same-side interior angles.

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