Question

Помогите пожалуйста разобраться

Answer 1

1.
=((С*(С+4)-С*(С-4)-С^2+16)16-C^2):((4С+С^2)(4-C^2)=(C^2+8C+16)(16-C^2)*(4-C)^2C(4+C)=(C+4)(C+4)(4-C)(4+C)*(4+C)(4+C)C(4+C)=(c+4)(4-c)*(4+c)c=(c+4)^2c(4-c)

2.
=((2m(n+2m)-4m^2)|(n+2m)(n+2m):((2m-1(n+2m))(n-2m)(n+2m)=2m^2(n+2m)(n+2m)*(n-2m)(n+2m)n=2m(n-2m)n(n+2m)

3.
=2a(6a+7)(2a+5)^2*(2a-5)(2a+5)(6a+7)=2a(2a-5)(2a+5)
1)(10a-25)(2a+5)=5(2a-5)(2a+5)
2)6a(2a+5)-16a(2a+5)(2a+5)=6a(2a+5)-16a)(2a+5)(2a+5)=12a^2+14a)(2a+5)^2=2a(6a+7)(2a+5)^2