Evaluate the expression below for s=4 and t=8. For s=4 and t=8, st^2 - s^2
Substitute s=4 and t=8 into the expression:
st^2 - s^2 = 4(8^2) - 4^2
= 4(64) - 16
= 256 - 16
= 240
So, when s=4 and t=8, the value of the expression st^2 - s^2 is 240.
To evaluate the expression st^2 - s^2 when s = 4 and t = 8, follow these steps:
1. Substitute the values of s and t into the expression.
- Replace s with 4: (4)(t^2) - 4^2
- Replace t with 8: (4)(8^2) - 4^2
2. Simplify the exponents.
- 8^2 = 64
- 4^2 = 16
3. Perform the calculations.
- (4)(64) - 16 = 256 - 16 = 240
Therefore, when s = 4 and t = 8, the expression st^2 - s^2 equals 240.