oblicz - x do kwadratu + 900 = (50- x) i wszystko w nawiasie do kwadratu + 1600 rozpisane zadanie

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

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

x² + 900 = (50 - x)² + 1600 x² +900 = 2500 - 100x +x² +1600 100x = 4100 - 900 = 3200 x = 32 =========================