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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Arya 7 days 2022-01-07T16:42:26+00:00 2 Answers 0 views 0

Answers ( )

    0
    2022-01-07T16:44:10+00:00

    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

    0
    2022-01-07T16:44:21+00:00

    Answer:

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

    Step-by-step explanation:

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45:7+7-4:2-5:5*4+35:2 =? ( )