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Multiplicación de expresiones algebraicas
Contribuido por: Gutierrez
  • 1. (27s5 / 49s) * (21s4 / 243s)
A) s7/21
B) s10/14
C) s9/7
D) s8/3
E) s11/42
  • 2. [5/(3+10x)]*(21+70x)
A) 15
B) 21
C) 30
D) 50
E) 35
  • 3. [(10u3v)/(7u+v)]*[(u+v)/15u2]
A) [2uv*(u+v)]/[3*(7u+v)]
B) (u+v)/7
C) [2*(u+v)]/[3*(7u+v)]
D) (5uv)/7
E) 5/(7u+v)
  • 4. [(5-r)/7]*[7/(r-5)]
A) -1
B) 1
C) 7/5
D) 1/7
E) -5/7
  • 5. {[(7x-10)*(x+2)]/x6}*[x/(10-7x)]
A) -[(x+2)/x5]
B) -(x+2)/x7
C) (x+2)/x6
D) -[(7x-10)*(x+2)]/3x6
E) -140/(10-7x)
  • 6. [(2t2-5t-25)/(t+9)]*[(t2+4t-45)/(t2-10t+25)]
A) t+9
B) t-5
C) (2t+5)/(t+9)
D) 2t+5
E) (2t+5)/(t-5)
  • 7. [(x-10y)2/(x+10y)]*[(x2+16xy+60y2)/(x2-100)]
A) x+6y
B) [(x-6y)*(x+6y)]/(x+10y)
C) x-10y
D) [(x+10y)*(x-6y)]/(x-10y)
E) [(x-10y)2*(x+6y)]/(x+10)
  • 8. [(x+2)/(x-2)]*[(2x2-3x-2)/(3x2+7x-6)]*[(x2-9)/(x2+11x+18)]
A) [(2x-1)*(x-2)]/[(3x+2)*(x+3)]
B) [(2x-1)*(x-2)]/[(3x-2)*(x+9)]
C) [(2x+1)*(x-3)]/[(3x-2)*(x+9)]
D) [(2x+1)*(x+9)]/[(3x-2)*(x+2)]
E) [(2x+1)*(x+3)]/[(3x+2)*(x+2)]
  • 9. [(x3+3x2-81x-243)/(x3-3x2-81x+243)]*[(x2-9)/x]
A) (x+3)/[x(x+9)]
B) [(x+3)*(x+9)]/x
C) (x+3)2/x
D) [(x-3)*(x-9)]/x
E) [(x-3)2]/[x(x+9)]
  • 10. [(16x2-1)/(4x2+25x+25)]*[(5x2-29x-42)/(x2-18x+81)]*[(18+7x-x2)/(4x2-29x+7)]
A) -[(4x-1)(5x-6)(x+2)]/[(4x+5)(x+5)(x-9)]
B) [(4x+1)(5x+6)(x+2)]/[(4x+5)(x+5)(9-x)]
C) [(4x-1)(5x+6)(x+9)]/[(4x+5)(x+7)(2-x)]
D) [(4x+1)(5x-6)(x+5)]/[(4x-5)(x-7)(9-x)]
E) [(4x+1)(5x+6)(x+7)]/[(4x+5)(x+9)(5-x)]
  • 11. [(x3+3x2-49x-147)/(x3-3x2-49x+147)]*[(x2-9)/x]
A) (x+3)2/x
B) [(x+3)(x+7)]/x
C) [(x-3)(x-7)]/x
D) (x-3)2/[x(x-7)]
E) (x+3)/[x(x-7)]
Otros exámenes de interés :
Àlgebra
Productos notables
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