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.