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2 years ago

5.) 12(x - 10)=

Mathematics

1 answer:

Varvara68 [4.7K]2 years ago

8 0

Step-by-step explanation:

5). 12*(x-10)

6). x*(x-8)

7). ‑((‑(3*y))+9)

9). 8-1 .9x/3=3

10). ?

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3 years ago

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<u>Step-by-step explanation:</u>

Note: The question would have made more sense if if it was 2/x = x - 1 but I will answer it as written.

$\dfrac{1}{x}=x-1\qquad \text{Restriction: }x\neq 0\\\\\\\text{Cross multiply, simplify, and set equal to zero:}\\1=x(x-1)\\\\1=x^2-x\\\\0=x^2-x-1\\\\\\\text{This is not factorable so you will need to use Quadratic Formula:}\\\\x=\dfrac{-(-1)\pm \sqrt{(-1)^2-4(1)(-1)}}{2(1)}\\\\\\x=\dfrac{1\pm \sqrt5}{2}$

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