2. Find the value of x^3 + 2x^2 - 3 when x=3
Answer-42
4. Compare the quantity in Column A with the quantity in Column B.
Column A Column B
The solution of The solution of
2(x-3) = 6x 3x + 2 + 5x + 6
To find the value of x^3 + 2x^2 - 3 when x = 3, we substitute 3 into the equation for x:
x^3 + 2x^2 - 3 = 3^3 + 2(3)^2 - 3 = 27 + 18 - 3 = 42
Therefore, the value of x^3 + 2x^2 - 3 when x = 3 is 42.
To compare the quantities in Column A and Column B, we need to solve the equations and determine if one is greater than, less than, or equal to the other.
Column A: 2(x-3) = 6x
Column B: 3x + 2 + 5x + 6
First, let's solve Column A:
2(x-3) = 6x
2x - 6 = 6x
-6 = 6x - 2x
-6 = 4x
x = -6/4 = -3/2 = -1.5
Next, let's solve Column B:
3x + 2 + 5x + 6
8x + 8
Now we compare the values:
Column A: x = -1.5
Column B: 8x + 8
Since we don't have a specific numerical value for Column B, we cannot directly compare the two columns. We cannot determine if one is greater than, less than, or equal to the other without more information.