Question

descompune în factori tot pls dau coroana​

Answer 1

Răspuns:

Rezolvarea mai jos !

Explicație pas cu pas:

Salut !

27. x²-5x=x(x-5)

28. 3x¹⁰+9x⁸=3x⁸(x²+3)

29. x(x+1)-x-1 =x(x+1)-(x+1)=(x+1)×(x-1)

30. x²(x+1)+x(x+1)²=x(x+1)×(x+x+1)=x(x+1)×(2x+1)

31. xy-x-y+1=x(y-1)-(y-1)=(y-1)(x-1)

32. 9xy+3x-3y-1=3x(3y+1)-(3y+1)=(3y+1)×(3x-1)

33. 25x²-49=5²×x²-7²=(5x)²-7²=(5x-7)(5x+7)

34. (x-2)²-4x²=(x-2-2x)×(x-2+2x)=(-x-2)×(x-2+2x)

35. x²+6x+9-y²=(x+3)²-y²=(x+3-y)(x+3+y)

36. x²+7x+6=x(x+6)+x+6=(x+6)×(x+1)

37. x²-5x+6=x²-2x-3x+6=x(x-2)-3(x-2)=(x-2)(x-3)

38. x²+2x-3=x²+3x-x-3=x(x+3)-(x+3)=(x+3)×(x-1)

39. 2x²+x-1=2x²+2x-x-1=2x(x+1)-(x+1)=(x+1)(2x-1)

40. x³+x²-16x-16=x²×(x+1)-16(x+1)=(x+1)×(x²-16)=(x+1)×(x-4)(x+4).