Question

i really need helppppp plzzzzzz

Answer 1

Answer:

$- 4 x \sqrt{14 x - 2}$

Step-by-step explanation:

$\frac{8 x -56 x^{2} }{\sqrt{14x - 2} }$

$\frac{{(8 x -56 x^{2}) } * {\sqrt{14 x -2} }}{(\sqrt{14 x -2} )^{2} }$

cancel the square root :

$\frac{{(8 x -56 x^{2}) } * {\sqrt{14 x -2} }}{{14 x -2}  }$

and  extract common factor:

$\frac{{(8x) ( 1 - 7 x) } * {\sqrt{14 x -2} }}{{ -2* ( -7x +1) }  }$

I extract common factor -2 because this way I can cancel (- 7x +1 )

Then:

$\frac{{8x} * {\sqrt{14 x -2} }}{{ -2 }  }$

${{-4x} * {\sqrt{14 x -2} }}$