4: представьте в виде многочлена 1) (6 + 3)^22) (m-2n)(-a)3) (m-11)(m+2)4) (x-2)(x+2)5) (7-x)^26) (1+2k)(1-2k+4k^2)7) 4m^3(n-5m)8) (a-1)(a^2 +a+1)9) (a+b)(2a - 3b)10) (2b+c)(c-2b)11) (6-5m)^212) (2a-1)(4a^4+2a+1)13) (2k-1)(-1)14) (x^2-a)(2+x)15) (7x +4)^216) (y-a^2)(y+a^2)17) (2b+3)(3b-2)18) (b-2a)5ab19) (a^2-4) (a^2+4)20) (2a-3)^2(10-a)^321) (10-а)^3пж пж ответьте ​

(6 + 3)^2 = 81

(m-2n)(-a) = -a(m-2n)

(m-11)(m+2) = m^2 - 9m - 22

(x-2)(x+2) = x^2 - 4

(7-x)^2 = x^2 - 14x + 49

(1+2k)(1-2k+4k^2) = 4k^2 - 4k + 1

4m^3(n-5m) = 4m^3n - 20m^4

(a-1)(a^2 +a+1) = a^3 - 1

(a+b)(2a - 3b) = 2a^2 - ab - 3b^2

(2b+c)(c-2b) = -4b^2 + bc + 2c

(6-5m)^2 = 25m^2 - 60m + 36

(2a-1)(4a^4+2a+1) = 8a^5 - 6a^4 - 2a^2 + 4a^4 + 2a + 1

= 8a^5 - 2a^4 - 2a^2 + 2a + 1

(2k-1)(-1) = 1 - 2k

(x^2-a)(2+x) = x^3 + 2x^2 - ax - 2a

(7x +4)^2 = 49x^2 + 56x + 16

(y-a^2)(y+a^2) = y^2 - a^4

(2b+3)(3b-2) = 6b^2 - b - 6

(b-2a)5ab = -10a^2b + 5ab^2

(a^2-4) (a^2+4) = a^4 - 16

(2a-3)^2(10-a)^3 = (4a^2 - 12a + 9)(1000 - 300a + 27a^2)

= 108a^4 - 690a^3 + 1665a^2 - 1800a + 729

(10-a)^3 = -a^3 + 30a^2 - 300a + 1000