Evaluate
2st2-s2 for s=4 and t=8
To evaluate the expression 2st2-s2 for s=4 and t=8, substitute the values of s and t into the expression:
2(4)(8^2)-(8^2)
First, calculate 8^2 = 64:
2(4)(64)-(64)
Then, calculate 2(4)(64) = 512:
512-64
Finally, subtract 64 from 512:
448
So, when s=4 and t=8, 2st2-s2 evaluates to 448.
To evaluate the expression 2st2 - s2, we substitute s = 4 and t = 8 into the expression.
Step 1: Replace s with 4 and t with 8 in the expression.
2(4)(8)^2 - (4)^2 = 2(4)(64) - 16
Step 2: Calculate the values inside parentheses.
2(4)(64) - 16 = 512 - 16
Step 3: Perform the multiplication and subtraction.
512 - 16 = 496
Therefore, when s = 4 and t = 8, the value of the expression 2st2 - s2 is 496.