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zvonat [6]
3 years ago
12

If f(x)=2x²+5 andq(x)=x²-2 find (f-g)(x)

Mathematics
1 answer:
Stolb23 [73]3 years ago
7 0

Answer:

what grade is this

Step-by-step explanation:

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Help fast!!!<br> -2x-6=2-4x-(x-1)
Julli [10]

Answer:

if you're finding x, x=3

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3 years ago
Please answer asap this person made a mistake what is the error and correct solution to this problem
stiv31 [10]

Answer:

6

Step-by-step explanation:

Hello, please consider the following.

(4+x)^2=4^2+2\cdot 4\cdot x+x^2=16+\boxed{8}x+x^2\\\\\text{ ... and not ...}\\\\16+\boxed{4}x+x^2

So the correct equation becomes.

x^2+64=16+8x+x^2\\\\8x=64-16=48\\\\\text{ we divide by 8 both sides of the equation.}\\\\x=\dfrac{45}{8}=6

Hope this helps.

Do not hesitate if you need further explanation.

Thank you

6 0
3 years ago
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Ymorist [56]

Answer:

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5 0
3 years ago
The length of a string is L inches. Samantha cuts it into two unequal pieces such that the length of the small piece is 35% of L
skelet666 [1.2K]

Answer:

The shorter piece   x  =  8.4 in

The longer one    y  =  15.6 in

Step-by-step explanation:

If we cut  a string length  L  in to unequal  pieces we get two pieces

first one with length  x  and the other one with length  y

Let call  x  the smaller piece,  then   y = L  -  x will be the longer one

If   x  =  35 %    then

x  =  0,35* L     and

y = L -  x  =  L - 0,35*L      ⇒  y  =  0,65 L     ⇒ y  =  0.65*24

Now if L  =  24  in

x  =  0,35*24          ⇒               x = 8.4 in

and

L  -  x  =  0.65*L      ⇒       L - x  =  0.65*24     y  =  L  -  x  =  15.6 in

as way of verification you can add the length of the two pieces and find:

8.4  +  15.6  = 24 in

4 0
3 years ago
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