c1 $y'$=($x^2$)'+(x$\sqrt[]{x}$ )'+1'
$y'$=2x+(x'$\sqrt[]{x}$ +($\sqrt[]{x}$ )'x)+0
$y'$=2x+($\sqrt[]{x}$ +$\dfrac{x}{2\sqrt[]{x} }$ )
$y'$=2x+$\dfrac{3}{2}$ .$\sqrt[]{x}$
c2 $y'$=$\dfrac{-[(2x+5)^2]'.3}{(2x+5)^4}$
$y'$=$\dfrac{-(2.(2x+5).2).3}{(2x+5)^4}$
$y'$=$\dfrac{-12.(2x+5)}{(2x+5)^4}$
$y'$=$\dfrac{-12}{(2x+5)^3}$
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