Question

4a(a*3-5a*2+6)
(a+2)(5a-4)

Answer 1

Объяснение:

$4a(a \times 3 - 5a \times 2 + 6) = 4a(a \times 3 - 10a + 6) = 4a( - 7a + 6) = - 28a {}^{2} + 24a$

$(a + 2)(5a - 4) = 5a {}^{2} - 4a + 10a - 8 = 5a {}^{2} + 6a - 8$