1. x(x²-25) = x(x-5)(x+5)
2. -10(a²+2ab+b²) = -10(a+b)²
3. (5x²-6)(5x²+6)
4. (y-x)(y+x)+(y+x) = (y+x)(1+y-x)
1. x(x²-25) = x(x-5)(x+5)
2. -10(a²+2ab+b²) = -10(a+b)²
3. (5x²-6)(5x²+6)
4. (y-x)(y+x)+(y+x) = (y+x)(1+y-x)