## Which best explains why the expression plus or minus StartRoot b squared minus 4 a c EndRoot cannot be rewritten as b plus or minus StartRoo

Question

Which best explains why the expression plus or minus StartRoot b squared minus 4 a c EndRoot cannot be rewritten as b plus or minus StartRoot negative 4 a c EndRoot during the next step?

Negative values, like −4ac, do not have a square root.

The ± symbol prevents the square root from being evaluated.

The square root of terms separated by addition and subtraction cannot be calculated individually.

The entire term b2 − 4ac must be divided by 2a before its square root can be determined.

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2022-01-07T16:42:26+00:00
2022-01-07T16:42:26+00:00 2 Answers
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## Answers ( )

Answer:

C) The square root of terms separated by addition and subtraction cannot be calculated individually.

Step-by-step explanation:

sqrt(b² – 4ac) is not equal to

b – sqrt(4ac)

Because when you square b – sqrt(4ac), it’s not b² – 4ac..

(b- sqrt(4ac))² = b² – 2bsqrt(4ac) + 4ac

Answer:C. The square root of terms separated by addition and subtraction cannot be calculated individually.

Step-by-step explanation: