(1-m)(1+m)(1+m²)=(1-m²)(1+m²)=1-m^4
1-m^4=1-m^4
5n²-3(n-1)(n+1)=5n²-3n²+3=2n²+3
2n²+3=2n²+3
7(p²-2)-22=7p²-14-22=7p²-36
3p²+4(p+3)(p-3)=3p²+4p²-36=7p²-36
7p²-36=7p²-36
8(6-q)(q+6)+5q²=288-8q²+8q²=288-3q²
3(82-q²)+42=246-3q²+42=288-3q²
288-3q²=288-3q²