Question

Find the product (13y²z)(2xyz²)

Answer 1

Answer:

=(2x−y+3z)(4x

2

+y

2

+9z

2

+2xy+3yz−6xz)

=(a+b+c)(a

2

+b

2

+c

2

−ab−bc−ac)

=a

3

+b

3

+c

3

−3abc

=(2x)

3

+(−y)

3

+(3z)

3

−3.(2x)(−y)(3z)

=8x

3

−y

3

+27z

3

+18xyz