Помогоите с алгеброй, срочно! 2 вариант

1.

a) 1.25^4 x 8^4

=(1.25 x 8)^4

=10^4

b) 6^12/36 x 6^9

=6^3/6^2

=6

2.

a) 21x^3y^2 x (-4/7x)

=-3x^3y^2 x 4x

= -12x^4y^2

b) -0.25a^2b^4 x (-8ba^3)

=-0.25a^2b^4 x (-8a^3b)

=2a^5b^5

3.

a) -3a^8b^3 x 2ab^6

=-6a^8b^3+6a^1

=-6a^8+1b^9

=-6a^9b^9

b) -98xy^3 x (1/7x^2)^2

=-98xy^3 x 1/49x^4

=-2xy^3x^4

=-2x^5y^3

c) (-4ab^3)^3 x (a^2b)^2

=-(4ab^3)^3 x (a^2b)^2

=-64a^3b^9a^4b^2

=-64a^7b^11

4. ?

5.

3 x 3^3 x -1/3^2

=-3 x 3^3 x 3^-2

=-3^2

=-9