Question

Разложите на множители:
1) 25-9a^{2}
2) 36m^{2} -100n^{2}
3)0,04p^{2} -1,69q^{2}

Answer 1

1)25-9a²=5²-(3a)²=(5+3a)(5-3a)
2)36m²-100n²=4(9m²-25n²)=4((3m)²-(5n)²)=4(3m+5n)(3m-5n)
3)0,04p²-1,69q²=(0,2p)²-(1,3q)²=(0,2p+1,3q)(0,2p-1,3q)

Answer 2

1) 25-9а^2=(5-3а)(5+3а)

2) 36m^2-100n^2=(6m-10n)(6m+10n)

3) 0,04p^2-1,63q^2=(0,2p-1,3q)(0,2p+1,3q)