1. 2-8x²
2. 3x²-27Y²
3. 5a³-20a
4. -7x³+28xy²
5. 18a³b-50ab³
6. -8m^4+98m²n²
1. 2-8x²
2. 3x²-27Y²
3. 5a³-20a
4. -7x³+28xy²
5. 18a³b-50ab³
6. -8m^4+98m²n²
1. 2-8x²
=2(1-4x²)
=2(1-2x)(1+2x)
2. 3x²-27Y²
=3(x²-9Y²)
=3(x-3y)(x+3y)
3. 5a³-20a
=5a(a²-4)
=5a(a-2)(a+2)
4. -7x³+28xy²
=7x(4y²-x²)
=7x(2y-x)(2y+x)
5. 18a³b-50ab³
=2ab(9a²-25b²)
=2ab(3a-5b)(3a+5b)
6. -8m^4+98m²n²
=2m²(49n²-4m²)
=2m²(7n-2m)()7n+2m
1. 2-8x²=2(1-4x²)=2(1+2x)(1-2x)
2. 3x²-27Y²=3(x²-9y²)=3(x+3y)(x-3y)
3. 5a³-20a=5a(a²-4)=5a(a+2)(a-2)
4. -7x³+28xy²=7x(4y²-x²)=7x(2y+x)(2y-x)
5. 18a³b-50ab³=2ab(9a²-25b²)=2ab(3a+5b)(3a-5b)
6. -8m^4+98m²n²=2m²(49n²-4m²)=2m²(7n+2m)(7n-2m)