Answer:
The greatest value of the expression 1-x^2 is 1
Explanation:
Here, we want to find the greatest value of the integer 1-x^2
We should understand that when we talk of integers, we are referring to whole numbers.
We should understand that 0 is also an integer.
Apart from zero, any other integer we substitute for x will give the function a negative value. Only 0 will make sure that the value remains positive and as such gives the function its highest possible value
So therefore;
1-0^2 = 1-0 = 1
Hence, the greatest possible value of the expression is 1