les Find dy/dx if (1+ z)3 (1-2) 2 O (1+x) 2(5-x)/ (1-*) 3 O (1+x ) 2 ( x - 5) / ( 1- * ) 4 O (1+x ) 2 (x- 5)/(1- *) 3 O ( 1 + * ) 2 (5 - * ) / ( 1 - * ) 4 none of the above O 3(1+x)2/(2(1-x) )