4 years ago

Factor completely: 2a2 − a − 10

1 answer:

6 0

Correct answer is D.

$2a^2-a-10
\\2a^2- 5a+4a -10
\\a(2a-5)+2(2a-5)
\\(2a-5)(a+2)$

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kherson [118]

6(10)=6 times 10 which is 60

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4 years ago

Oksana_A [137]

Looks good, since b c and d don't really match up answer a looks like the proper choice for you

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4 years ago

hichkok12 [17]

Graph C is the correct answer

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3 years ago

Y_Kistochka [10]

Step-by-step explanation:

Firstly, we'll try to simplify the integrand. By hint 1, we see that:

$\ln(x^2) = 2\ln(x)$

Simplifying the integrand gives us:

$\frac{1}{8}\left(\frac{1}{x(\ln(x))^3}\right)$

Next, by hint 2, we observe that:

$\frac{d}{dx}\left(\ln(x)\right) = \frac{1}{x}$

So this tells us to make the substitution: $u = \ln(x)$

Doing so gives us:

$\int \frac{dx}{x(ln(x^2))^3} = \int \frac{du}{8u^3}$ , which should be trivial.

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4 years ago

Neko [114]

Y equals 48 because it’s a rise of 1 over 4

5 0

3 years ago