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16x²+8x+1=x²+5x+3x+15+33
15x²-47=0
15x²=47 //15
x²=47/15
x= √47/√15 v x= -√47/√15
(4x+1)²=(x+3)*(x+5)+34
16x²+8x+1=x²+5x+3x+15+34
15x²-48=0
15x²=48
x²=48/15
x= √48/√15 v x= -√48/√15
16x²+8x+1=x²+5x+3x+15+33
15x²=47
x²=47/15
x=√47/15 lub x=√-(47/15)
(4x+1)²=(x+3)*(x+5)+34
16x²+8x+1=x²+5x+3x+15+34
15x²=48
5x²=16
x²=3,2
x=√3,2 lub x=√-3,2