4 years ago

4xy(x cubed +5xy- 7y squared)

Mathematics

2 answers:

VARVARA [1.3K]4 years ago

4 0

Answer:

4x^4y + 20x^2y^2 - 28x^3y

Step-by-step explanation:

4xy(x^3 + 5xy - 7x^2)

= 4xyx^3 + 4xy * 5xy - 4xy * 7x^2

= 4x^2y + 4xy * 5xy - 4xy * 7x^2

= 4x^4y + 20x^2y^2 - 4xy * 7x^2

= 4x^4y + 20x^2y^2 - 28x^3y

aliina [53]4 years ago

4 0

Answer:

Step-by-step explanation:

4xy( x^3+5xy-7y)

=4xy(x^3)+4xy(5xy)-4xy(7y)

=4x^4 y + 20x^2 y^2- 28xy^2

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