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Oxana [17]
3 years ago
5

The difference of the square of a number and 18 is equal to 3 times that number. Find

Mathematics
1 answer:
ololo11 [35]3 years ago
7 0

Answer:

6.

Step-by-step explanation:

To solve this, you can set up an equation as such:

x²-18= 3x

Now, rearrange this to make it an equation in standard form:

x²-3x-18=0.

Simply turn this equation into factored form:

(x-6)(x+3)= 0.

The only positive solution here is x=6.

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ℎ()=―4+ 5, find the value of ℎ(–3)​
frez [133]

Answer:

Step-by-step explanation:

Suppose that f(2) = −4, g(2) = 3, f '(2) = −5, and g'(2) = 1.

Find h'(2).

(a)    h(x) = 4f(x) − 5g(x)

Use the constant multiple and difference rules:

h'(x) = 4f '(x) − 5g'(x)

h'(2) = 4*f'(2) − 5*g'(2), now substitute values and solve

h'(2) = 4*(−5) − 5*1 = −20 − 5 = −25

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2 years ago
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Answer:

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Step-by-step explanation:

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Step-by-step explanation:

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