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GREYUIT [131]
3 years ago
6

Factor completely. 7 + 14x + 7x^2 = *khan academy*

Mathematics
2 answers:
Helen [10]3 years ago
7 0

Answer:

It's 7(1+x)^2

Ipatiy [6.2K]3 years ago
4 0

Answer:

( X + 1 )( X + 1 )

Step-by-step explanation:

just factor it with calculator

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Which function has real zeros at x = –8 and x = 5?
Tcecarenko [31]

Answer:

option B is the answer . thank me later , you guys are lame

3 0
3 years ago
If the area of a circle measures 25π cm2, what is the circumference of the circle in terms of π? A) 5π cm B) 10π cm C) 50π cm D)
Bad White [126]

the answer to the question is a.) 5rr cm because 5rr is right on brainly i've had it


8 0
3 years ago
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A side of the triangle below has been extended to form an exterior angle of 128°. Find the value of x.
denis23 [38]

Answer:

x = 104

Step-by-step explanation:

The exterior angle is equal to the sum of the opposite interior angles

24+x = 128

Subtract 24 from each side

24+x-24 =128 -24

x =104

3 0
3 years ago
Which graph shows the polar coordinates (-3,-) plotted
Slav-nsk [51]
Graph 1 would be the answer
3 0
3 years ago
Find constants a and b such that the function y = a sin(x) + b cos(x) satisfies the differential equation y'' + y' − 7y = sin(x)
Elza [17]
The first thing we must do in this case is find the derivatives:
 y = a sin (x) + b cos (x)
 y '= a cos (x) - b sin (x)
 y '' = -a sin (x) - b cos (x)
 Substituting the values:
 (-a sin (x) - b cos (x)) + (a cos (x) - b sin (x)) - 7 (a sin (x) + b cos (x)) = sin (x)
 We rewrite:
 (-a sin (x) - b cos (x)) + (a cos (x) - b sin (x)) - 7 (a sin (x) + b cos (x)) = sin (x)
 sin (x) * (- a-b-7a) + cos (x) * (- b + a-7b) = sin (x)
 sin (x) * (- b-8a) + cos (x) * (a-8b) = sin (x)
 From here we get the system:
 -b-8a = 1
 a-8b = 0
 Whose solution is:
 a = -8 / 65
 b = -1 / 65
 Answer:
 
constants a and b are:
 
a = -8 / 65
 
b = -1 / 65
4 0
3 years ago
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