Multiply (√7) (-√2). Give an exact answer.
1. -√14
2. √5
3. √14
4. -7√2
The answer is 4. -7√2.
To multiply (√7) (-√2), we can multiply the coefficients and combine the square roots.
The coefficient is (-1) * (1) = -1.
The square roots can be multiplied together as (√7) * (√2) = √(7 * 2) = √14.
Therefore, the answer is -√14.
So, the correct answer is option 1. -√14.
To multiply (√7) (-√2), we can follow these steps:
Step 1: Multiply the numbers outside the square root symbol.
(-1) * (-2) = 2
Step 2: Multiply the numbers inside the square root symbol.
√7 * √2 = √14
Step 3: Combine the results from Step 1 and Step 2.
2 * √14 = 2√14
So, the correct answer is 2√14.