1) х2-у2 =(x-y)(x+y)
2) с2-z2 =(c-z)(c+z)
3) a2 - 25 =(a-5)(a+5)
4) 16-b2 =(4-b)(4+b)
5) 100-x2 =(10-x)(10+x)
6) p2 - 400 =(p-20)(p+20)
7) x2 - 0,09 =(x-0.3)(x+0.3)
8) 0,01-y2 =(0.1-y)(0.1+y)
9) q2 - 4/9 =(q-2/3)(q+2/3)
10) 9/16 - n2 =(3/4-n)(3/4+n)
11) c2 - 1 9/16=c2-25/16=(c-5/4)(c+5/4)=(c-1 1/4)(c+1 1/4)
12) у2 - 1 24/25 =y2-49/25=(y-7/5)(y+7/5)=(y-1 2/5)(y+1 2/5)
1) х2-у2 =(x-y)(x+y)
2) с2-z2 =(c-z)(c+z)
3) a2 - 25 =(a-5)(a+5)
4) 16-b2 =(4-b)(4+b)
5) 100-x2 =(10-x)(10+x)
6) p2 - 400 =(p-20)(p+20)
7) x2 - 0,09 =(x-0.3)(x+0.3)
8) 0,01-y2 =(0.1-y)(0.1+y)
9) q2 - 4/9 =(q-2/3)(q+2/3)
10) 9/16 - n2 =(3/4-n)(3/4+n)
11) c2 - 1 9/16=c2-25/16=(c-5/4)(c+5/4)=(c-1 1/4)(c+1 1/4)
12) у2 - 1 24/25 =y2-49/25=(y-7/5)(y+7/5)=(y-1 2/5)(y+1 2/5)