This is already the simplest from as it can't be reduced any lower. The numbers, 7 and 11, have 1 as their GCF and when divided by it, it would just be the same.
Try seeing this link to know how to reduce to lowest terms.
i think that
4 (x³ + y) or (x³ + y)
(x² + 9x + 14)(x + 2)
(x³ + 11x² + 32x + 28) sq. inches
hindi po ako sure. try lang.