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2 years ago

- x² - 4x + 12 = 0 how do u solve by completing the square

Mathematics

1 answer:

MrRa [10]2 years ago

8 0

Answer:

Step-by-step explanation:

Simplifying

x2 + -4x + -12 = 0

Reorder the terms:

-12 + -4x + x2 = 0

Solving

-12 + -4x + x2 = 0

Solving for variable 'x'.

Factor a trinomial.

(-2 + -1x)(6 + -1x) = 0

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Hitman42 [59]

Given:

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Sol:.

$N(A\text{ or B)=N(A)+N(B)-N(A and B)}$

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$\begin{gathered} =6+9 \\ =15 \end{gathered}$

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N(professors and male)

$=6$

N(professors OR male) = N(professors) + N(males) -N(professor OR male)

$\begin{gathered} N(\text{ Professors OR male)=15+11-6} \\ =20 \end{gathered}$

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$\begin{gathered} =6+9+5+6 \\ =26 \end{gathered}$

Then probablitiy is:

$\begin{gathered} =\frac{20}{26} \\ =\frac{10}{13} \end{gathered}$

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2 years ago

- x² - 4x + 12 = 0 how do u solve by completing the square​

- x² - 4x + 12 = 0 how do u solve by completing the square