<p>Pg672 #14
Pg674#19</p>
<h1>14 is C it is basic operations</h1>
<p>sqrt (x+9)=x-3
square both sides
x+9 =x^2-6x+9
subtract 9 from both sides
x=x^2 - 6x (C)</p>
<p>Wow, lol, hopefully im getting all these dumb mistakes out before the real test, any idea on 19?</p>
<p>Ty for 14</p>
<p>Pg674#19
x^(-4/3)=k^(-2), y^(4/3)=n^2
square root of both sides of both equations
x^(-2/3)=k^-1, y^(2/3)=n —> y^(-2/3)=n^-1
(x<em>y)^(-2/3)=x^(-2/3)</em>y^(-2/3)=(k^-1)(n^-1)=1/(nk)</p>
<p>how did u get the square root of x^-4/3 to equal x^-2/3</p>
<p>nevermind stupid question</p>