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avatar+42 

x= -8/3 , 2(3x^2+24x+48)+1(x-6)=2(1)

 

IS THE ANSWER EQUAL??????!!

TO EACH OTHER?

Virax1o1  Jun 1, 2017
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2+0 Answers

 #1
avatar+4157 
+2

If    \(x=\,-\,\frac83\)   , does    \(2(3x^2+24x+48)+1(x-6)=2(1)\)   ?

 

 

Replace every   " x "   with   \( -\,\frac83 \)   in the second equation.

 

\(2(3(-\frac83)^2+24(-\frac83)+48)+1((-\frac83)-6)\stackrel{?}{=}2(1) \\~\\ 2(3(\frac{64}{9})-64+48)+(-\frac{26}3)\stackrel{?}{=}2 \\~\\ 2(\frac{64}{3}-16)-\frac{26}3\stackrel{?}{=}2 \\~\\ 2(\frac{16}{3})-\frac{26}3\stackrel{?}{=}2 \\~\\ \frac{32}{3}-\frac{26}3\stackrel{?}{=}2 \\~\\ \frac63\stackrel{?}{=}2 \\~\\ 2=2\quad\text{ true!}\)

hectictar  Jun 1, 2017
 #2
avatar+42 
+1

Thank you very much!!

Virax1o1  Jun 1, 2017

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