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bonufazy [111]
3 years ago
5

What is the value of x? (3x) (x + 40) 20 35 60 70

Mathematics
1 answer:
Lesechka [4]3 years ago
5 0
Answer: 3x^2 +120x

Good luck !
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A fraction where the numerator is smaller than the denominator
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Step-by-step explanation:

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How do I do this? Please explain in detail.
umka2103 [35]
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multiply by x-6
=> (x-6)22.5/(x-6) + (x-6)22.5/(x+6) = 9(x-6)
=> 22.5 + (x-6)22.5/(x+6) = 9(x-6)
multiply by x+6
=> (x+6)22.5 + (x+6)(x-6)22.5/(x+6) = 9(x-6)(x+6)
=> (x+6)22.5 + (x-6)22.5 = 9(x-6)(x+6)
distribute
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=> 45x = 9x^2 - 9(36)
=> 0 = 9x^2 - 45x - 9(36)
divide by 9
=> 0 = x^2 - 5x - 36
=> 0 = x^2 - 5x - 36
=> 0 = (x - 9)(x + 4)
x=9 and -4
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I think you got to multiply the numbers hopefully I helped
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