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2010-03-31T17:46:32+02:00
X^2+900=(50-x)^2+1600
x^2+900=2500-100x+x^2+1600
x^2-x^2+100x=2500+1600-900
100x=3200
x=3200/100
x=32
1 5 1
2010-03-31T17:46:47+02:00
X²+900=(50-x)²+1600
x²+900=(50-x)(50-x)+1600
x²+900=2500-100x+x²+1600
x²-x²+100x=1600-900
100x=700/:100
x=7
2010-03-31T17:47:22+02:00
X² + 900 = (50 - x)² + 1600
x² +900 = 2500 - 100x +x² +1600
100x = 4100 - 900 = 3200
x = 32
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