(03.01 mc) factor completely 3x2 + 9x − 54. (6 points)

3x^2+9x-54
= 3(x-3)(x-6)
That’s your answer 3(x-3)(x-6)

The answer is 3(x - 3)(x + 6)

Factor common term from 3x^2 + 9x - 54
In this case, 3 is the common term. Hence:
  3(x^2 + 3x - 18)

Simplify by factoring (x^2 + 3x - 18). Hence:
 (x - 3)(x + 6)

Therefore: 3(x - 3)(x + 6)

Element 17 is chlorine it is a group 7 element(halogen) and belongs to period 3 of the periodic table