разложить на множитель
5x^2-5
25x^2-(x+y)^2
решить уравнение
(4x-3)(4x+3)-(4x-1)^2=3x
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Answers & Comments
25x^2-(x+y)^2=(5x-x-y)(5x+x-y)=(4x-y)(6х-у)(4x-3)(4x+3)-(4x-1)^2=3x
16х^2-9-(4х-1)^2=3х
16х^2-9-(16х^2-8х+1)=3х
16х^2-9-16х^2+8х-1=3х
3х-8х=10
-5х=10
х=-2
1)5х2-5=5(х-1)=5(х-1)(х+1)
2)=(5х-х-у)(5х+х-у)=(4х-у)(6х-у)