Factor $LaTeX: \displaystyle 70 x^{3} - 50 x^{2} + 63 x - 45$ .

Grouping the first two terms and factoring out their GCF, $LaTeX: \displaystyle 10 x^{2}$ , gives $LaTeX: \displaystyle 10 x^{2}(7 x - 5)$ . Grouping the last two terms and factoring out their GCF, $LaTeX: \displaystyle 9$ , gives $LaTeX: \displaystyle 9(7 x - 5)$ . The polynomial now has a common binomial factor of $LaTeX: \displaystyle 7 x - 5$ . This gives $LaTeX: \displaystyle 10 x^{2} \left(7 x - 5\right) +9 \cdot \left(7 x - 5\right) = \left(7 x - 5\right) \left(10 x^{2} + 9\right)$ .