x do potęgi 2 się skraca po obu stronach:
6(3x+1)+2(x-3)=8(7x-1) +2(x-3)
18x + 6 + 2x - 6 = 56x - 8 + 2x - 6
20x = 58x - 14 |-58x
-38x= - 14 |:(-38)
x= 14/38
x=7/19
(3x-2)(3x+2)+(4x+6)² =(5x+3)(5x-3)+25
9x² - 4 + 16x² + 48x + 36 = 25x² - 9 + 25
25x² +48x + 32 = 25x² +16 |-25x²
48x + 32 = 16 |-32
48x=-16 |:48
x=-⅓
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x do potęgi 2 się skraca po obu stronach:
6(3x+1)+2(x-3)=8(7x-1) +2(x-3)
18x + 6 + 2x - 6 = 56x - 8 + 2x - 6
20x = 58x - 14 |-58x
-38x= - 14 |:(-38)
x= 14/38
x=7/19
(3x-2)(3x+2)+(4x+6)² =(5x+3)(5x-3)+25
9x² - 4 + 16x² + 48x + 36 = 25x² - 9 + 25
25x² +48x + 32 = 25x² +16 |-25x²
48x + 32 = 16 |-32
48x=-16 |:48
x=-⅓