Rozwiaż równanie:
(x-1)²-(x+4)²+2x+31 = 0
x²-2x+1-x²-8x-16+2x+31=0
-8x+16=0
-8x=-16
x=2
;]
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(x-1)²-(x+4)²+2x+31 = 0
x²-2x+1-x²-8x-16+2x+31=0
-8x+16=0
-8x=-16
x=2
(x-1)²-(x+4)²+2x+31 = 0
x²-2x+1-x²-8x-16+2x+31=0
-8x+16=0
-8x=-16
x=2
;]