2st^2-s^2 for s=4 and t=8
To evaluate the expression 2st^2 - s^2 for s = 4 and t = 8, we substitute s = 4 and t = 8 into the expression:
2st^2 - s^2 = 2(4)(8)^2 - (4)^2
= 2(4)(64) - 16
= 512 - 16
= 496
Therefore, when s = 4 and t = 8, 2st^2 - s^2 is equal to 496.
To find the value of the expression 2st^2 - s^2 for s = 4 and t = 8, follow these steps:
Step 1: Substitute the given values of s and t into the expression.
2st^2 - s^2 = 2(4)(8^2) - 4^2
Step 2: Simplify the powers in the expression.
2(4)(64) - 16
Step 3: Perform the multiplication and subtraction.
512 - 16 = 496
Therefore, when s = 4 and t = 8, the value of the expression 2st^2 - s^2 is 496.