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lilavasa [31]
3 years ago
13

Factor the expression x^2 -4x-45

Mathematics
1 answer:
insens350 [35]3 years ago
7 0
The answer is (x-9)(x+5), so the roots are 9,-5.
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Find the slope of line a and line b from two points
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Step-by-step explanation: Look at the attachment

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Factor x^2+5x-50<br> A. (x+25)(x-2)<br> B. (x-5)(x+10)<br> C. (x-10)(x+5)<br> D. (x+2)(x-25)
Drupady [299]
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A bus drives 547.25 miles on day 1 of a trip. On day 2, he drives 327.875. How many more miles did he drive the first day than t
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5 0
3 years ago
If f(x)=-x^2+2x, find f(3)-7
igomit [66]

Answer:

f(3) just means to substitute 3 in for x.

Step-by-step explanation:

f(3) just means to substitute 3 in for x.  

f

(

3

)

=

−

2

Explanation:

f

(

3

)

=

−

(

3

)

2

+

7

According to the order of operations, first square the 3, which is 9.

f

(

3

)

=

−

9

+

7

The negative sign in front of the x squared is equivalent to multiplying by negative one.

Add -9 and 7 together, which is -2

So,  

f

(

3

)

=

−

2

5 0
3 years ago
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