Question

пожалуйста.алгебра 7 класс​

Answer 1

(a-c)^2=a^2-2ac+c^2
(3m+8)^2=9m^2+48m+64
(9a-5d)^2=81a^2-90ad+25d^2
(3a^2+2d^4)^2=9a^4+12a^2d^4+4d^8

Answer 2

Объяснение:

1) = a^2-2ac+c^2

2) = (3m)^2+2*3m*8+64 =

=9m^2+48m+64

3) = (9а)^2-2*9a*5d+(5d)^2=

= 81a^2-90ad+25d^2

4) = (3a^2)^2+2*3a^2*2d^4+(2d^4)^2=

= 9a^4+12a^2d^4+4d^8