Question

multiply 2 by 3 x cube y square and (2x-3y)​

Answer 1

Answer:

12x^4y-18x^3y^2

Step-by-step explanation:

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Answer 2

Answer:it was easy

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Step-by-step explanation:

3x  

3

y  

2

×(2x−3y)

=3x  

3

y  

2

⋅2x−3x  

3

y  

2

⋅3y

=6x  

4

y  

2

−9x  

3

y  

3

 

Now, for x=−1,y=2, we have

L.H.S.-

3x  

3

y  

2

×(2x−3y)

=3(−1)  

3

(2)  

2

(2⋅(−1)−3⋅(2))

=3⋅(−1)⋅4×(−2−6)

=(−12)×(−8)

=96

R.H.S.-

6x  

4

y  

2

−9x  

3

y  

3

 

=6(−1)  

4

(2)  

2

−9(−1)  

3

(2)  

3

 

=6⋅1⋅4−9⋅(−1)⋅8

=24+72

=96

∵ L.H.S. = R.H.S.

Hence verified.