Odpowiedzi

2009-11-24T14:49:14+01:00
A) 16-x²=4²-x²=(4-x)(4+x)
b) a²-64=a²-8²=(a-8)(a+8)
c) 100-y²=10²-y²=(10-y)(10+y)
d) x²-36 = (x-6)(x+6)
e)x²-y²= (x-y)(x+y)
2009-11-24T14:51:11+01:00
(4-x)(4+x)
(a-8)(a+8)
(10-y)(10+y)
(x-6)(x+6)
(x-y)(x+y)
1 3 1
2009-11-24T14:55:07+01:00
16 - x^2 = 4^2 - x^2= (4 - x) (4+x)
a^2 - 64 = a^2 - 8^2 = (a - 8) (a+8)
100 - y^2 = 10^2 - y^2 = (10 - y) (10+y)
x^2 - 36 = x^2 - 6^2 = (x - 6) (x+6)
x^2 - y^2 = (x - y) (x + y)