(4x + 5)(x - 3)
Chat with our AI personalities
if f(x) = x3 + 4x2 - 11x - 30, then yes, (x - 3) is indeed a factor. f(x) = x3 + 4x2 - 11x - 30 ∴ f(x) = (x - 3)(x2 + 7x + 10) ∴ f(x) = (x - 3)(x + 2)(x + 5)
Divide all terms by 4:- x2+7x+12 = (x+3)(x+4) when factored
4x2 + 14x + 12 = 2(2x2 + 7x + 6) = 2(2x + 3)(x + 2)
[ x3 - 4x2 + 7x ] / (x) = x2 - 4x + 7
If you mean x = 3 then the value of 7x-2x is 21-6 = 15