ПОМОГИТЕ!ДАМ 15 БАЛОВ ЗА 1 ВАРИАНТ ВЕРНО ЗА ВТОРОЙ 20БАЛОВ

Variant 1. 1. p(x)=p₁(x)+p₂(x)=(x²+2)-(x³-x²-1)=x³+1 p₁(x)=x²+2 p₂(x)=x³-x²-1 2. a)2x(x+1)=2x²+2x b)x²y(x-y)=x³y-x²y² 3. a)(x-2)²=x²-4x+4 b)(3x²+y²)²=9x⁴+6x²y²+y² 4. ((a⁵+2a⁴-a³)/(-a³))+(a-1)(a+1)=-4 (a-1)(a+1)=a²-a+a-1=a²-1 -(a⁵+2a⁴-a³)/(a³)=-(a³(a²+2a-1))/(a³)=-(a²+2a-1) -a²-2a+1+a²-1=-2a a=2 -2*2=-4 5. (2x-3)(3x+2)=(x-1)(x+1)+(5x+2)(x-14) (x-1)(x+1)=x²-1 (5x+2)(x-14)=5x²-70x+2x-28=5x²-68x-28 (2x-3)(3x+2)=6x²+4x-9x-6=6x²-5x-6 5x²-68x-28+x²-1=6x²-68x-29 6x²-5x-6=6x²-68x-29 63=-23 x=-23/63 Variant 2. 1. p(x)=p₁(x)-p₂(x)=(x²+2x)-(x³+x²-2x)=-x³+4x p₁(x)=x²+2x p₂(x)=x³+x²-2x 2. a)3x(x-2)=3x²-6x b)x²y²(x+2y)=x³y²+2x²y³ 3. a)(2x+4)²=4x²+16x+16 b)(x²-2y²)²=x⁴-4x²y²+4y² 4. ((a²-a⁷+a³)/(-a²))+(a+1)²=-1 ((a²-a⁷+a³)/(-a²))=-(a²(1-a⁵+a))/(a²)=a⁵-a-1 (a+1)²=a²+2a+1 a⁵-a-1+a²+2a+1=a⁵+a²+a a=-1 (-1)⁵+(-1)²+(-1)=-1+1-1=-1 5. 4(x-4)(x+8)=(3x+2)(x-5)+(x-1)(x+1) (x-1)(x+1)=x²-1 4(x-4)(x+8)=4(x²+8x-4x-32)=4(x²+4x-32)=4x²+16x-128 (3x+2)(x-5)=3x²-15x+2x-10=3x³-13x-10 3x³-13x-10+x²-1=4x²-13x-11 4x²+16x-128=4x²-13x-11 29x=117 x=117/29