Simplify x(5x − 9) + 7(x² − 2) + 17

Simplify x(5x − 9) + 7(x² − 2) + 17

Simplify $$2\left(\left(\frac{6}{2}\right)x^2-22x+15\right)-6(x^2+5x-18)$$.

Simplify x(6x – 3) + 5(x² – 4) + 18.

Find the value of p so that the expression (15.97)³ + 1.4373 × p + (0.03)³ is a perfect cube.