1) 10a^5b^3 - 18a^3b^72ab^3(10a^2 - 18b^4)2) (x+5)(5a+1) - (x+5)(2a-8)(x+5)(3a+9)3) 3a - 3b + ax - bx(a-b)(3+x)4) x^2 - 2xy + x - xz + 2yz - z(x-z)(x-2y+2y)
1) 12x - 4x^2 = 04x(3 - x) = 0x = 0, x = 32) (x-9)(4x+3) - (x-9)(3x-1) = 04x^2 + 3x - 36x - 27 - 3x^2 + x -9 = 0x^2 - 32x - 36 = 0(x-36)(x+1) = 0x = 36, x = -1
16^5 = (2^4)^5 = 2^20 = (36) + 2^10 = 31024 = 30728^6 = (2^3)^6 = 2^18 = 3*262144 = 7864323072 - 786432 = -783360-783360 / 3 = -261120Значение выражения 16^5 - 8^6 кратно 3.
3x^2 - 4x + 1(3x-1)(x-1)
1) 10a^5b^3 - 18a^3b^7
2ab^3(10a^2 - 18b^4)
2) (x+5)(5a+1) - (x+5)(2a-8)
(x+5)(3a+9)
3) 3a - 3b + ax - bx
(a-b)(3+x)
4) x^2 - 2xy + x - xz + 2yz - z
(x-z)(x-2y+2y)
1) 12x - 4x^2 = 0
4x(3 - x) = 0
x = 0, x = 3
2) (x-9)(4x+3) - (x-9)(3x-1) = 0
4x^2 + 3x - 36x - 27 - 3x^2 + x -9 = 0
x^2 - 32x - 36 = 0
(x-36)(x+1) = 0
x = 36, x = -1
16^5 = (2^4)^5 = 2^20 = (36) + 2^10 = 31024 = 3072
8^6 = (2^3)^6 = 2^18 = 3*262144 = 786432
3072 - 786432 = -783360
-783360 / 3 = -261120
Значение выражения 16^5 - 8^6 кратно 3.
3x^2 - 4x + 1
(3x-1)(x-1)