Question

пжпжпж!!!!!!!!!!!!!!дам 35 баллов

Answer 1

Объяснение:

1)

$100a {}^{4} - \frac{1}{9} b { }^{2} =\frac{900a^{4}-b^{2}}{9} =\left(30a^{2}-b\right)\left(30a^{2}+b\right) =\frac{\left(30a^{2}-b\right)\left(30a^{2}+b\right)}{9}$

2)

$9x {}^{2} - (x - 1) {}^{2} = (3x - (x - 1)) \times (3x + (x - 1)) = (3x - x + 1) \times (3x + x - 1) = (2x + 1) \times (4x - 1)$

3)

$3c - c {}^{2} - 3a + a {}^{2} =-c^{2}+3c-3a+a^{2} =\left(a-c\right)\left(a+c-3\right)$

4)

$36a {}^{4} - 25a {}^{2} b {}^{2} =a^{2}\left(36a^{2}-25b^{2}\right) =\left(6a-5b\right)\left(6a+5b\right) =a^{2}\left(6a-5b\right)\left(6a+5b\right)$