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9/16x²+x²=100
25/16x²=100/*16
25x²=1600/:25
x²=64/√
x=8
¾x=¾*8=6
Odp: 6,8,10
b)x²+10²=(x+2)²
x²+100=x²+4x+4
-4x=-96/:-4
x=24
24+2-26
Odp 24 i 10 przyproastokatne a przeciw =26