Answer:
It is not permitted the denominator to be zero as we can't divide by zero.
Non- permissible values are:
a)
b)
c)
d)
- x² - x - 12 = 0
- (x - 4)(x + 3) = 0
- x = 4 or x = -3
e)
- 10x³ - 92x² + 18x = 0
- 2x(5x² - 46x + 9) = 0
- x(5x - 1)(x - 9) = 0
- x = 0, x = 1/5, x = 9