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Hoochie [10]
4 years ago
6

What is x2+7x+12=0 in standard form

Mathematics
2 answers:
Vitek1552 [10]4 years ago
7 0
X² + 7x + 12 = 0
x = <u>-(7) +/- √((7)² - 4(1)(12))</u>
                     2(1)
x = <u>-7 +/- √(49 - 48)</u>
                   2
x = <u>-7 +/- √(1)
</u>              2
x = <u>-7 +/- 1</u>
           2
x = <u>-7 + 1</u>      x = <u>-7 - 1</u>
          2                   2
x = <u>-6</u>            x = <u>-8</u>
       2                   2
x = -3            x = -4
<u />
mote1985 [20]4 years ago
6 0
Not sure what standard form is, but I can solve for x
so I'm assuming that x2 means x squared or x^2 so

x^2+7x+12=0
since it equals zero, if we can factor it, then
if we have xy=0 then x and/or y=0 so

to factor x^2+7x+12
find what 2 numbers multiply to get 12 and add to get 7 so
12=2 times 2 times 3 or 2 times 6 or 1 times 12 or 3  times 4

the numbesr are 4 times 3 so

x^2+7x+12
facotrs out to
(x+4)(x+3) so
x^2+7x+12=0
(x+4)(x+3)=0
set each to zero
x+4=0 and x+3=0
x+4=0
subtract 4 form both sides
x=-4

x+3=0
subtract 3 from both sides
x=-3


x=-4 or -3







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The first term of a geometric series is -3, the common ratio is 6, and the sum of the series is -4,665. Using a table of values,
tamaranim1 [39]

Answer:

Option A. 5

Step-by-step explanation:

From the question given above, the following data were obtained:

First term (a) = –3

Common ratio (r) = 6

Sum of series (Sₙ) = –4665

Number of term (n) =?

The number of terms in the series can be obtained as follow:

Sₙ = a[rⁿ – 1] / r – 1

–4665 = –3[6ⁿ – 1] / 6 – 1

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Cross multiply

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Divide both side by –3

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Collect like terms

7775 + 1 = 6ⁿ

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Express 7776 in index form with 6 as the base

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Thus, the number of terms in the geometric series is 5.

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Answer:

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Step-by-step explanation:

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Answer:

3\sqrt{141}

Step-by-step explanation:

Use the Pythagorean Theorem.

37^{2}=x^{2}+10^{2}

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-100       -100

1269=x^{2}

\sqrt{1269}=\sqrt{x^{2} }

3\sqrt{141}=x

3 0
4 years ago
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