3 years ago

X^2-81 Factor the quadratic completely

Mathematics

2 answers:

tamaranim1 [39]3 years ago

6 0

Answer:

(x+9)(x-9)

Step-by-step explanation:

whenever its is x^2

you can start off with

(x+_)(x+_)

then your figure out "what times what" is -81 (they have to be the same number!)

Its -9 and 9

and so you plug that in to get

(x+9)(x-9)

faust18 [17]3 years ago

3 0

Answer:

x ^2 − 9^ 2. hope this helps

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astra-53 [7]

<h2>Answer:</h2>

Option: C is the correct answer.

C. $a_n=a_{n-1}-3\ ;\ a_1=2$

<h2>Step-by-step explanation:</h2>

The sequence is given by the explicit formula as:

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Option: C

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3 years ago

If you bought a stock last year for a price of $67, and it has risen 12% since then, how much is the stock worth now, to the nea

lisabon 2012 [21]

Answer:$75.04

Step-by-step explanation:

last year price=$67

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3 years ago

Find the value of x in the triangle shown below.

oksian1 [2.3K]

Step-by-step explanation:

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25=16+x²

25-16=x²

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3 years ago

Please tell me how o do this

larisa86 [58]

Answer:

you might have to use an app that scans that specific problem :)

Step-by-step explanation:

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3 years ago

1 pint= 1/8 gallon. How many pints are there in 2/3 gallon.

FrozenT [24]

gallon = pint *0.125

gallon = pint / 8
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0.125+0.125+0.125+0.125+0.125 = 2

16 would be the answer I believe, maybe I'm wrong, double check.

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3 years ago

Read 2 more answers