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Oliga [24]
3 years ago
6

What are the two solutions of 2x2 = –x2 – 5x – 1?

Mathematics
1 answer:
Thepotemich [5.8K]3 years ago
3 0

Answer:

Step-by-step explanation:

quadratic formula

x = -(-5)+

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n200080 [17]
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4 0
3 years ago
Find the coefficient of x^7 in the expansion of (3x+4)^11
devlian [24]

Use the binomial theorem:

(a+b)^n=\displaystyle\sum_{k=0}^n\binom nka^{n-k}b^k

In this case,

(3x+4)^{11}=\displaystyle\sum_{k=0}^{11}\binom{11}k(3x)^{11-k}4^k

The x^7 term occurs for k=4:

\dbinom{11}4(3x)^{11-4}4^4=\dfrac{11!}{4!(11-4)!}3^74^4x^7=184,757,760x^7

6 0
3 years ago
Which phrase represents this expression?
elixir [45]

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Step-by-step explanation:

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3 years ago
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mrs_skeptik [129]

Answer:

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Step-by-step explanation:

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4 years ago
If 30 marbles were to divided between 7 people how much each person will get ?
kirza4 [7]
Hi,

Here is the equation.
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Hope this helps.
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