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ahoymewmew
4c^2 - 12c + 9 help factor.
4c^2 -6c -6c +9 can you do it now ?
you multiply them then subtract? im sorry im not good at factors. :x
4c(c-1.5)-6(c-1.5) (4c-6)(c-1.5)
how did you get (c-1.5)? D: @Coolsector
4c^2 -6c -6c +9 look at the first two terms : 4c^2 -6c we can take 4c out and : 4c(c-1.5) look at the last two terms: -6c+9 we can take -6 out and : -6(c-1.5) now we have 4c(c-1.5)-6(c-1.5) we can take c-1.5 out and : (c-1.5)(4c-6)
is that the easiest way to explain it is there another way? :s @Coolsector
you can use the formula (-b +/- sqrt(b^2 - 4ac)) / 2a for finding roots ..