Identify Common Factors: Look for common factors in all terms. Check if there is a greatest common factor (GCF) that can be factored out from all terms of the polynomial x3+7x2−5x−35. Since there are no common factors in all terms, we cannot factor out a GCF.
Group Terms for Factoring: Group terms to factor by grouping.Since the polynomial has four terms, we can try to factor by grouping. Group the first two terms together and the last two terms together: (x3+7x2)+(−5x−35).
Factor Out Common Factors: Factor out the common factor from each group.From the first group x3+7x2, we can factor out x2, which gives us x2(x+7).From the second group −5x−35, we can factor out −5, which gives us −5(x+7).Now we have x2(x+7)−5(x+7).
Factor Out Common Binomial: Factor out the common binomial factor.We can see that (x+7) is a common factor in both terms. Factor out (x+7) from the expression.This gives us (x+7)(x2−5).
Check Quadratic Factorability: Check if the remaining quadratic can be factored further.The quadratic x2−5 does not factor over the integers because it does not have integer roots. Therefore, it is already in its simplest form.