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Factorizing Sum and different between 2 cubes (5)
Contributed by: Mohamed
  • 1. Factorize : x3 -1
A) (x-1)(x2-x-1)
B) (x+1)(x2-x+1)
C) (x-1)(x2+x-1)
D) (x-1)(x2+x+1)
  • 2. Factorize : 8x 3 +27
A) (2x+3)(2x2-3x+6)
B) (2x-3)(2x2-3x+9)
C) (2x+3)(2x2-3x-9)
D) (2x+3)(2x2-3x+9)
  • 3. Factorize : x3 +64
A) (x+4)(x2-4x+8)
B) (x+4)(x2-4x-16)
C) (x+4)(x2-4x+16)
D) (x-4)(x2-4x+16)
  • 4. Factorize : x 3 -125
A) (x-5)(x2-5x+25)
B) (x-5)(x2+5x-25)
C) (x-5)(x2+5x+25)
D) (x-5)(x2+5x+10)
  • 5. Factorize : 8m 3 -125 n3
A) (2m2 - 5n) (4m2+10mn-25n2)
B) (2m2 - 5n) (4m2+10mn+10n2)
C) (2m - 5n) (4m2+10mn+25n2)
D) (2m2 + 5n) (4m2+10mn+25n2)
  • 6. If x+y =3 , x2 -xy + y2 = 5 , then x3 - y 3 = ........
A) 15
B) 6
C) 10
D) 8
  • 7. If X3 +27) = (x+)(x2 + k + 9) , then k=........
A) -6x2
B) -6x
C) 6x
D) 12x
  • 8. If X3 -y3 = 26 and X2 + Xy +y2 = 13 , then X-y =......
A) 3
B) 15
C) 4
D) 2
  • 9. If X3 +y3 =63 and X+y =9 , then X2 -Xy +y2 =.........
A) 3
B) 9
C) 14
D) 7
  • 10. If (x+y) factor of x3+y3 , then the second factor is .............
A) (x2-xy+y2)
B) (x-y)
C) (x2+xy-y2)
D) (x2-xy-y2)
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