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Zina [86]
3 years ago
5

How are -1+2i and -1-2i solutions to x^2+2x+5=0

Mathematics
1 answer:
Nikolay [14]3 years ago
6 0

Step-by-step explanation:

just applieng quadratic form

- b  ±\frac{ \sqrt[2]{ {b}^{2}  -  4ac} }{2a}

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Solve this question<br> 2(x+3)=x-4
Whitepunk [10]

Answer:

x=-10

Step-by-step explanation:

2(x+3)=x-4 (Multiply the 2 by the x and the 3);

2x+6=x-4 (Now you group like terms)

2x-x=-4-6

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8 0
3 years ago
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Ronch [10]
Think of it as two rectangular prisms next to each other, and find the volume of each one separately.

The big one on the left has a volume of 4 * 12 * 6, or 288.

The smaller one on the right has a volume of 2 * 6 * 6, or 72.

288 + 72 = 360. 360 cubic feet of water are needed.
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Virty [35]

Answer:

The answer is A.

The value of the 1 in the one's place is 10 times​ the value of the 1 in the tenths place.

Step-by-step explanation:

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jenyasd209 [6]

Answer:

11/15=x/240

240/15=16

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Step-by-step explanation:

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