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This question is on solving radicals for algebra 2; I also need help

This question is on solving radicals for algebra 2; I also need help-example-1
User Eli Sand
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1 Answer

6 votes

Given:

Algebric equation is given

Required:

To calculate the value of x

Step-by-step explanation:


\begin{gathered} √(6-2x)\text{ +x=2\lparen x+15\rparen-9} \\ \\ \sqrt{6-2x\text{ }}\text{ +x=2x+21} \\ \\ √(6-2x)\text{ =x+21} \end{gathered}
\begin{gathered} 6-2x=x^2+42x+441 \\ \\ x^2+44x+435=0 \\ \\ x=-15,\text{ x=-29} \end{gathered}
\begin{gathered} when\text{ x=-15 } \\ \\ √(6-2(-15))\text{ =-9} \\ \\ 2(-15+15)-9=-9 \\ \\ -9=-9\text{ so x=-15} \end{gathered}
\begin{gathered} when\text{ x =-29} \\ √(6-2(-)29)+(-29)=35 \\ \\ =2(-29+15)-9=-37 \\ \\ 35\\e-37 \end{gathered}

Required answer:

x=-15

User Rtribaldos
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