Answer:
The last part.
Step-by-step explanation:
The error is only at the last part. Basically the answer part.
The answer should be —
We don't multiply the square roots when adding or subtracting. That'd contradict the rules.
Here, we let the square root of five as x-term.
As we add up, we would get 13x. Thrn we convert x-term back to square root of five.
The answer would be —
Remember that we don't multiply the square roots when adding or subtracting.