3a3 x-5a2 b2x5ab at a=1,b=2

 

Subject
Topic
Level
Junior High
Grade
7

Answer

-600

 

Steps

 

  1. 3a^3 = 3x(1)^3 =3
  2. -5a^2b^2= -5×(1)^2×(2)^2=-5×4=-20
  3. 5ab=5×1×2=10

Expression=3×(-20)×10

                    =-600

 

 

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