Вариант 1
1. а) 2x^2 * y * ( y^2 - 3xy^2 + x ) = 2x^2 * y^3 - 6*x^3 * y^3 + 2x^3*y
б) a * ( a^2 - 3a ) + 4 * ( a^2 - 1 ) = a^3 - 3a^2 + 4*a^2 - 4 = a^3 + a^2 - 4
2. 7 * ( 2x - 1 ) + 5 * ( 3x + 2 ) = 32
14x - 7 + 15x + 10 = 32
29x = 29
x = 1
Вариант 3
1. a) c^2 * d^2 / 4 * ( 4c^2 - 2*c*d^2 + d) = c^4 * d^2 - c^3 * d^4 / 2 + c^2 * d^3 / 4
б) -0,8 * k * ( k + 5 ) - 0,6 * ( 10k - 3 ) = 0,8*k^2 - 4k - 6k + 1,8 = 0,8*k^2 - 10k + 1,8
2. -4 * ( x - 2 ) + 5 * ( 2x + 3 ) = -1
-4x + 8 + 10x + 15 = -1
6x = -24
x = -4
Вариант 1
1. а) 2x^2 * y * ( y^2 - 3xy^2 + x ) = 2x^2 * y^3 - 6*x^3 * y^3 + 2x^3*y
б) a * ( a^2 - 3a ) + 4 * ( a^2 - 1 ) = a^3 - 3a^2 + 4*a^2 - 4 = a^3 + a^2 - 4
2. 7 * ( 2x - 1 ) + 5 * ( 3x + 2 ) = 32
14x - 7 + 15x + 10 = 32
29x = 29
x = 1
Вариант 3
1. a) c^2 * d^2 / 4 * ( 4c^2 - 2*c*d^2 + d) = c^4 * d^2 - c^3 * d^4 / 2 + c^2 * d^3 / 4
б) -0,8 * k * ( k + 5 ) - 0,6 * ( 10k - 3 ) = 0,8*k^2 - 4k - 6k + 1,8 = 0,8*k^2 - 10k + 1,8
2. -4 * ( x - 2 ) + 5 * ( 2x + 3 ) = -1
-4x + 8 + 10x + 15 = -1
6x = -24
x = -4