Question

simplifique (expressão algébrica)

(3x + 4y)(3x - 4y) - (4y - 3x)² - 4y (3x - 1)
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Answer 1

Oie, Td Bom?!

$(3x + 4y) \: . \: (3x - 4y) - (4y - 3x) {}^{2} - 4y \: . \: (3x - 1)$

$9x {}^{2} - 16y {}^{2} - (16y {}^{2} - 24xy + 9x {}^{2} ) - 12xy + 4y$

$9x {}^{2} - 16y {}^{2} - 16y {}^{2} + 24xy - 9x {}^{2} - 12xy + 4y$

$- 16y {}^{2} - 16y {}^{2} + 24xy - 12xy + 4y$

$- 35y {}^{2} + 24xy - 12xy + 4y$

$- 32y {}^{2} + 12xy + 4y$

Att. Makaveli1996