Question

I really need helppppp plzzzzzz

Answer 1

`- 4 x √(14 x - 2)`

Explanation:

`(8 x -56 x^(2) )/(√(14x - 2) )`

`\frac{{(8 x -56 x^(2)) } * {√(14 x -2) }}{(√(14 x -2) )^(2) }`

cancel the square root :

`\frac{{(8 x -56 x^(2)) } * {√(14 x -2) }}{{14 x -2}  }`

and extract common factor:

`\frac{{(8x) ( 1 - 7 x) } * {√(14 x -2) }}{{ -2* ( -7x +1) }  }`

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

Then:

`\frac{{8x} * {√(14 x -2) }}{{ -2 }  }`

`{{-4x} * {√(14 x -2) }}`