fie x cateta1 y cateta 2 si z ipotenuza.
x/y=8/15
x+y+z=160
x^2+y^2=z^2
x=8*y/15
z=160-x-y=160-8*y/15-y
x^2+y^2=z^2=>(8*y/15)^2+y^2=(160-9*y/15-y)^2
=>64y^2/225+y^2=(160-24y/15)^2
=>(64+225)y^2/225=25600-2*160*24y/15+576y^2/225
=>(289-576)y^2/225+115200y/225=25600
=>-287y^2+115200y=25600*225
=>-287y^2+115200y=5760000
=>-287y^2+115200y-5760000=0
Delta=115200^2-4*287*5760000=13271040000-6612480000=6658560000
y1,2=[-115200+/-radical(delta)]/2*(-287)
o sa vad cum calculez radicalul si revin, am probleme cu netul si iti trimit atat acuma.
