" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2025 KUDO.TIPS - All rights reserved.
y=x+7=drugi bok
x²+(x+7)²=13²
x²+x²+14x+49=169
2x²+14x-120=0
Δ=b²-4ac=14²-4*2*(-120)=196+960=1156
√Δ=34
x₁=(-14-34):4=-48:4=-12 nie może bok być ujemny
x₂=(-14+34):4=20:4=5
y=5+7=12
P=12*5=60
L=2*5+2*12=10+24=34 ;)