No one has answered me I posted this like 3 times

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jalexus

14.02.2020

Mathematics

answer: i will also answer if you give me a

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jacksonshalika

14.02.2020

Mathematics

answer: posted what

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i will answer if you give me brainliest

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cherokeesiouxw72

29.04.2022

Mathematics

To complete the square, we have to find out what constant number is required to make a perfect square trinomial.we need to divide the coefficient on x, which is -8, by 2, and then square the result. if we do that, we get (-8/2)^2 = (-4)^2 = 16.so we have to add 16 to both sides so that the left hand can be factored as a perfect square trinomial. $\begin{aligned} x^2 - 8x & = 24\\ x^2 -8x + 16 & = 24 + 16 \\ (x-4)^2 & = 40 \end{aligned}$ square root both sides (note that $\sqrt{(x-4)^2} = |x-4|$ ) $\begin{aligned} \sqrt{(x-4)^2} & = \sqrt{40} \\ \sqrt{(x-4)^2} & = \sqrt{4 \cdot 10} \\ |x-4| & = 2\sqrt{10} \\ \pm(x-4) & = 2\sqrt{10} \\ x-4 & = \pm2\sqrt{10} \\ x & =4 \pm2\sqrt{10} \end{aligned}$ so $x = 4 + 2\sqrt{10}$ $x = 4 - 2\sqrt{10}$

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