Answer:
This time all of them are right
I'm not writing this to achieve points, I have already actually check and read through it :D
Good work mate
Step-by-step explanation:
Answer:
x∈{-7√2, 7√2}
Step-by-step explanation:

<h3>hello!</h3>
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Let's simplify the expression:-

Multiply 3 times 1 and 1 times 2:-

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<h3>note:-</h3>
Hope everything is clear; if you need any clarification/explanation, kindly let me know, and I'll comment and/or edit my answer :)