Question 1084242
OK, I understand that its' the product of x and 3 that is to the 4th power, correct?. Because it could be x times 3^4. 
:
((x × 3)^4)-36 = 369
81 × x^4 = 405
x^4 = 5
take the 4th root of both sides:
x = -<span>&#8732;</span>5 or x = -i<span>&#8732;</span>5 or x = i<span>&#8732;</span>5 or x = <span>&#8732;</span>5