4.z²+1-(1+z)² 5.(х-2)²+(х-5)(х+7) 6.3(а-1)²+8а - вопрос №9257605411525763187843 от Kakashka2001 12.05.2022 16:58

Question

Алгебра: 4.z²+1-(1+z)² 5.(х-2)²+(х-5)(х+7) 6.3(а-1)²+8а 7.y(y++y)² 8.(b+4)²-(b-3)² выражения

Kakashka2001 · Answer

4. z^2+1-z^2-2z-1=-2z5. x^2-4x+4+x^2+7x-5x-35=2x^2-2x+4=2(x^2-x+2)6. 3(a^2-2a+1)+8a=3a^2-6a+3+8a=3x^2+2a+37. y^2+2xy-x^2-2xy-y^2=-x^28. b^2+8b+16-b^2+6b-9=14b+7=7(2b+1)...