Question

Срочно! Даю 20 баллов!
вариант 13
1) (4х+а)²=
2) (х-6)²=
3) (2а+9b)²=
4) (6х-4)(4+6х)=
5) (5х+1)²=

Answer 1

Объяснение:

1)

$(4x + a) {}^{2} = 16x {}^{2} + 8xa + a {}^{2}$

2)

$(x - 6) {}^{2} = x {}^{2} - 12x + 36$

3)

$(2a + 9b) {}^{2} = 4a {}^{2} + 36ab + 81b {}^{2}$

4)(6x-4)(4+6x)

$(6x - 4)(4 + 6x) = (6x - 4)(6x + 4) = 36x - 16$

5)

$(5x + 1) {}^{2} = 25x {}^{2} + 10x + 1$