I think the remaining number is x
Answer:
20
Step-by-step explanation:
Thanks

As we have to solve for b, it means we have to isolate b
So first of all subtract
from both sides
So we get

Now we need b , but its b^2 , so we can take square root on both sides.
taking square roots on both sides

Hence option B is correct
Answer:
A)
Step-by-step explanation:
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