Question

ПОМОГИТЕ ПЛИЗ
НОМЕР 11 ДАМ 20Б

Answer 1

Ответ:

а) (5а? - 5ах) + (-7a + 7x) = 5а(а - x) - 7(
= (5*4- 7)(4+3)=(20-7) *7=13* 7=
b) (m? - mn) + (-3m + 3n) = m(m - n) - 3
= (0.5 - 3)(0.5 - 0.25) = (-2.5) * 0.25 = -0. c) (a? + ab) + (-11a - 116) = a(a + b) - 11(a
= （6.6-11）（6.6+0.4）=（-4.4）*7=-30.8
d) (a? - ab) + (-2a + 26) = a(a - b) - 2(a - 1
=（S-2）（ -0.15） =（0.35-2）（0.35-0.1