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ehidna [41]
3 years ago
12

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

nus 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.
Mathematics
2 answers:
Gelneren [198K]3 years ago
9 0

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

kolbaska11 [484]3 years ago
6 0

Answer:

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

Step-by-step explanation:

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