Question

билет 23 даю 10 баллов

Answer 1

N1

а) 16a^2 - 4b^2 = 4(4a^2 - b^2) = 4(2a - b)(2a + b)

б) x^2 - 1 7/9 = x^2 - 16/9 = (x - 4/3)(x + 4/3)

Answer 2

$4(4 {a}^{2} - {b}^{2} ) = 4((2a) {}^{2} - {b}^{2} ) = 4(2a - b)(2a+ b)$

${x}^{2} - \frac{16}{9} = {x}^{2} - (\frac{4}{3} ) {}^{2} = (x - \frac{4}{3} )(x + \frac{4}{3} )$