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Read the following statements carefully ...

Read the following statements carefully and select the correct option.
Statement-1 : Difference between the value of expression, `4x + 2(x + y)` when x=2, y=3 and when x=3, y = 2 is 10.
Statement-2 : `4(a + 2b) + 3b^(2) + 9ab` should be subtracted from `2a - 2b + b^(2) - 6ab` to get `- (2a + 10b + 8b^(2) + 5ab)`

A

Statement-1 is true but Statement-2 is false.

B

Statement-1 is false but Statement-2 is true.

C

Both Statement-1 and Statement-2 are true.

D

Both Statement-1 and Statement-2 are false.

Text Solution

AI Generated Solution

The correct Answer is:
To solve the problem, we need to evaluate both statements and determine their validity. ### Step 1: Evaluate Statement 1 We need to find the difference between the values of the expression \(4x + 2(x + y)\) for two sets of values: \(x = 2, y = 3\) and \(x = 3, y = 2\). 1. **Substituting \(x = 2\) and \(y = 3\)**: \[ 4(2) + 2(2 + 3) = 8 + 2(5) = 8 + 10 = 18 \] 2. **Substituting \(x = 3\) and \(y = 2\)**: \[ 4(3) + 2(3 + 2) = 12 + 2(5) = 12 + 10 = 22 \] 3. **Finding the difference**: \[ 22 - 18 = 4 \] Thus, the difference is 4, not 10. Therefore, **Statement 1 is false**. ### Step 2: Evaluate Statement 2 We need to check if subtracting \(4(a + 2b) + 3b^2 + 9ab\) from \(2a - 2b + b^2 - 6ab\) results in \(- (2a + 10b + 8b^2 + 5ab)\). 1. **Write down the expressions**: - Expression 1: \(2a - 2b + b^2 - 6ab\) - Expression 2: \(4(a + 2b) + 3b^2 + 9ab\) 2. **Simplifying Expression 2**: \[ 4(a + 2b) + 3b^2 + 9ab = 4a + 8b + 3b^2 + 9ab \] 3. **Subtract Expression 2 from Expression 1**: \[ (2a - 2b + b^2 - 6ab) - (4a + 8b + 3b^2 + 9ab) \] 4. **Distributing the negative sign**: \[ 2a - 2b + b^2 - 6ab - 4a - 8b - 3b^2 - 9ab \] 5. **Combining like terms**: - For \(a\): \(2a - 4a = -2a\) - For \(b\): \(-2b - 8b = -10b\) - For \(b^2\): \(b^2 - 3b^2 = -2b^2\) - For \(ab\): \(-6ab - 9ab = -15ab\) Thus, we have: \[ -2a - 10b - 2b^2 - 15ab \] 6. **Factoring out the negative sign**: \[ - (2a + 10b + 2b^2 + 15ab) \] Now we compare this with \(- (2a + 10b + 8b^2 + 5ab)\). The two expressions are not equal because: - The coefficient of \(b^2\) is 2 in our result, while it is 8 in the statement. - The coefficient of \(ab\) is 15 in our result, while it is 5 in the statement. Therefore, **Statement 2 is also false**. ### Conclusion Both statements are false. ### Final Answer The correct option is that both Statement 1 and Statement 2 are false. ---
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