$\underline{\text{obliczenia}}$

$a)$

$3^2+4^2=x^2$

$9+16=x^2$

$x^2=25$

$x=5$

 

 

$b)$

$5^2+x^2={13}^2$

$25+x^2=169\mid -25$

$x^2=144$

$x=12$

 

 

$c)$

$x^2+{24}^2={25}^2$

$x^2+576=625\mid -576$

$x^2=49$

$x=7$

 

 

$d)$

$9^2+x^2={41}^2$

$81+x^2=1681\mid -81$

$x^2=1600$

$x=40$

 

 

$e)$

${11}^2+{60}^2=x^2$

$121+3600=x^2$

$x^2=3721$

$x=61$

 

 

$f)$

$x^2+{84}^2={85}^2$

$x^2+7056=7225\mid -7056$

$x^2=169$

$x=13$

 

$3$	$4$	$5$
$5$	$12$	$13$
$7$	$24$	$25$
$9$	$40$	$41$
$11$	$60$	$61$
$13$	$84$	$85$