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Vesnalui [34]
3 years ago
7

How do you simplify this?

Mathematics
1 answer:
lora16 [44]3 years ago
7 0
\dfrac{2x^3-2x^2-12x}{3x^2-6x}=\dfrac{2x\big(x^2-x-6\big)}{3x\big(x-2\big)}=
\dfrac{2\big(x^2-x-6\big)}{3\big(x-2\big)}=\\\\\\=\dfrac{2\big(x^2-3x+2x-6\big)}{3\big(x-2\big)}=\dfrac{2\Big[x\big(x-3\big)+2\big(x-3\big)\Big]}{3\big(x-2\big)}=
\dfrac{2\big(x-3\big)\big(x+2\big)}{3\big(x-2\big)}
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lubasha [3.4K]

Answer:

x = 18

Step-by-step explanation:

This problem can be solved using concept of Pythagoras theorem.

Pythagoras theorem states that in a right angled triangle, if "a" and "b" are sides containing the right angle and h is hypotenuse then the relation between them is a^2 + b^2 = h^2

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Given in the problem

a = 24

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applying Pythagoras theorem

24^2 + x^2 = (x+12)^2\\=> 576 + x^2 = x^2  + 24x + 144\\=>576 =  x^2  + 24x + 144 -  x^2\\=> 576 = 24x + 144 \\=>  576 - 144= 24x\\=> 432 = 24x\\=> x = 432/24 = 18

for (x+12)^2 we have used formula (a+b)^2 = a^2 + 2ab + b^2

Thus, value of x is 18.

8 0
4 years ago
Carlos received 84 votes. That was 3 of every 7 votes cast in the class president election. How many votes were cast?
Step2247 [10]
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5 0
3 years ago
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emmainna [20.7K]

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Step-by-step explanation:

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8 0
3 years ago
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