Ответ:
Объяснение:
1
1. (3a+ba)-(3y+by)=a(3+b)-y(3+b)=(3+b)(a-y)
2. (4-m)(4+m)
3. (2x+1)^2
4. (m+5n)(m^2-5mn+25n^2)
5. x(y^2-16x^2)=x(y-4x)(y+4x)
6. -5(x^2-6x+9)=-5(x-3)^2
2
1. 9b^2-4
2. z^2+12z+36
3. t^2+8t+16+t^2-1=2t^2+8t+15
3 27+8a^3-8a^3+16a=27+16a= 27-16=11
4
1. 2x(x^2-9)=0
x1=0 x2=+-3
2. 2x(25x^2-10x+1)=0
x1=0 25x^2-10x+1=0
(5x-1)^2=0
x2=1/5
3. (x^3-x)+(7x^2-7)= x(x^2-1)+7(x^2-1)=(x^2-1)(x+7)=0
x1=+-1 x2=-7
5 не видно знаков
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Answers & Comments
Ответ:
Объяснение:
1
1. (3a+ba)-(3y+by)=a(3+b)-y(3+b)=(3+b)(a-y)
2. (4-m)(4+m)
3. (2x+1)^2
4. (m+5n)(m^2-5mn+25n^2)
5. x(y^2-16x^2)=x(y-4x)(y+4x)
6. -5(x^2-6x+9)=-5(x-3)^2
2
1. 9b^2-4
2. z^2+12z+36
3. t^2+8t+16+t^2-1=2t^2+8t+15
3 27+8a^3-8a^3+16a=27+16a= 27-16=11
4
1. 2x(x^2-9)=0
x1=0 x2=+-3
2. 2x(25x^2-10x+1)=0
x1=0 25x^2-10x+1=0
(5x-1)^2=0
x2=1/5
3. (x^3-x)+(7x^2-7)= x(x^2-1)+7(x^2-1)=(x^2-1)(x+7)=0
x1=+-1 x2=-7
5 не видно знаков