Question

Разложите множители
9x^2-6xy
A^3+3a^2+3a+9
X^3-8y^3

ПОСТАВЛИ ЛУТШИЙ ОТВЕТ ​

Answer 1

Ответ:

$9x {}^{2} - 6xy = 3x \times (3x - 2y)$

$a {}^{3} + 3a {}^{2} + 3a + 9 = a {}^{2} \times (a + 3) + 3(a + 3) = (a + 3) \times (a {}^{2} + 3)$

$x {}^{3} - 8y {}^{3} = x {}^{3} - 2 {}^{3}y {}^{3} = x {}^{3} - (2y) {}^{3} = (x - 2y) \times (x {}^{2} + x \times 2y + (2y) {}^{2} ) = (x - 2y) \times (x {}^{2} + 2xy + 4y {}^{2} )$