Question

find the product class 7​

Answer 1

Answer:

−6x³−5x²y+xy²−4y³

Step-by-step explanation:

(−2x²+xy−y²)(3x+4y)

=(−2x²+xy+−y²)(3x+4y)

=(−2x²)(3x)+(−2x²)(4y)+(xy)(3x)+(xy)(4y)+(−y²)(3x)+(−y²)(4y)

=−6x³−8x²y+3x²y+4xy²−3xy²−4y³

=−6x³−5x²y+xy²−4y³

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Answer 2

Answer:

-6x³ - 5x²y + xy² - 4y³

Step-by-step explanation:

(-2x² + xy - y² )(3x + 4y)

(-2x² × 3x) + (-2x² × 4y) + (xy × 3x) + (xy × 4y) + (-y² × 3x) + (-y² × 4y)

-6x³ - 8x²y + 3x²y + 4xy² - 3xy² - 4y³

-6x³ - 5x²y + xy² - 4y³

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