Question

por favor ayúdeme doy corona ​

Answer 1

Respuesta:

(4x - 5y)² = (4x)² - 2(4x)(5y) + (5y)²

(4x - 5y)² = 16x²- 40xy + 25y²

(3x + 2y)² = (3x)² + 2(3x)(2y) + (2y)²

(3x + 2y)² = 9x² + 12xy + 4y²

(2x + 3y)² = (2x)² + 2(2x)(3y) + (3y)²

(2x + 3y)² = 4x² + 12xy + 9y²

(-12v + 7z)² = (-12v)² + 2(-12v)(7z) + (7z)²

(-12v + 7z)² = 144v² - 168vz + 49z²


$(\frac{1}{8}a - \frac{3}{4} b)^{2} = (\frac{a}{8} )^{2} - 2(\frac{a}{8})(\frac{3b}{4})+ (\frac{3b}{4})^{2}$
$(\frac{1}{8}a - \frac{3}{4} b)^{2} = \frac{a^{2}}{64} - \frac{3ab}{16}+ \frac{9b^{2}}{16}$

$(\frac{4}{5}j - \frac{7}{8} a)^{2} = (\frac{4j}{5} )^{2} - 2(\frac{4j}{5})(\frac{7a}{8})+ (\frac{7a}{8})^{2}$
$(\frac{4}{5}j - \frac{7}{8} a)^{2} = \frac{16j^{2} }{25} - \frac{7aj}{10}+ \frac{49a^{2} }{64}$