Find the missing side of each triangle. Leave your answers in simplest radical form.

The owner of the plant nursery where you were tells you to fill 350 ml bottles from a 30 l from a fertilizer

Which expression is equivalent to (5x^7+7x^8) − (4x^4−2x^8)? a. 9x^8 + 5x^7−4x^4 b. 3x^8 + 7x^7 c. 12x^8 − 2x^4 d. 5x^8 + 5x^7 + 4x^4

9is the geometric mean between x and 12