36z^2 -49
Isnt this the difference between two squares?
( (6z)^2-7^2)
z= 9.21954 (*4 is repeating)
To find the value of the expression 36z^2 - 49, you need to substitute a value for z and evaluate the expression.
Let's say we want to find the value of the expression when z is equal to 2.
Step 1: Substitute the value of z into the expression:
36(2)^2 - 49
Step 2: Simplify the expression using the order of operations (PEMDAS/BODMAS):
First, square 2:
36(4) - 49
Next, multiply 36 by 4:
144 - 49
Finally, subtract 49 from 144:
95
So, when z is equal to 2, the value of the expression 36z^2 - 49 is 95.