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y^2=21-x x=5 The solutions to the sy...

`y^2=21-x`
`x=5`
The solutions to the system of equation above are `(a_1,b_1) and (a_2,b_2)`. What are the values of `b_1` and `b_2`?

A

`-4 and 4`

B

`-sqrt21 and sqrt21`

C

`-5 and 5`

D

`-sqrt26 and sqrt26`

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The correct Answer is:
A
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