|1-4k| is greater than or equal to -11
How is the answer ALl real numbers
by definition,
|anything| ≥ 0
so |1-4k| must surely be ≥ -11 for anything inside the absolute value sign
How is the answer ALl real numbers
|anything| ≥ 0
so |1-4k| must surely be ≥ -11 for anything inside the absolute value sign