multiply 12x plus 7y by 15x minus 7y and subtract the product from -25x^{2} -19xy plus 37y^{2}

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multiply 12x plus 7y by 15x minus 7y and subtract the product from -25x^{2} -19xy plus 37y^{2}

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Shinalcantaraviz Shinalcantaraviz · Answer 1

Shinalcantaraviz Shinalcantaraviz

(12x + 7y)(15x - 7y) = 180x² - 84xy + 105xy - 49y²
= 180x² + 21xy - 49y²
(-25x² - 19xy + 37y²) - (180x² + 21xy - 49y²)
= -25x² - 19xy + 37y² - 180x² - 21xy + 49y²
= -205x² - 40xy +86y²

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