#### The factors of the difference of two squares - answers.

1.
(a + b)(a - b)
2.
(c + d)(c - d)
3.
(m + n)(m - n)
4.
(p - q)(p + q)
5.
(x + y)(x - y)
6.
(a + 2)(a - 2)
7.
(b - 4)(b + 4)
8.
(c - 6)(c + 6)
9.
(d - 10)(d + 10)
10.
(h - 15)(h + 15)
11.
(m - 12)(m + 12)
12.
(n - 17)(n + 17)
1
1
1
1
1
1
13.
(p - ---- )(p + ---- )
14.
(q + ---- )(q - ---- )
15.
(x - --- )(x + --- )
2
2
5
5
6
6
4
4
7
7
2b
2b
16.
(y - --- )(y + --- )
17.
(z - --- )(z + --- )
18.
(a - ----- )(a + ----- )
5
5
6
6
9
9
19.
(x - 0,1 )(x + 0,1 )
20.
(y - 0,3 )(y + 0,3 )
21.
( z - 0,16 )( z + 0,16 )
22.
(a + 0,4)(a - 0,4)
23.
(3b - 4)(3b + 4)
24.
(5c - 7)(5c + 7)
25.
(4m - 7n)(4m + 7n)
26.
(5n - 9p)(5n + 9p)
27.
(11pq - 15xy)(11pq + 15xy)
28.
(a 2 - b 2 )(a 2 + b 2 )
= (a - b)(a + b)(a 2 + b 2 )
29.
(p 3 - q 3 )(p 3 + q 3 )
= (p - q)(p 2 + pq + q 2 )(p + q)(p 2 - pq + q 2 )
30.
(x 4 - y 4 )(x 4 + y 4 )
= (x 2 - y 2 )(x 2 + y 2 )(x 4 + y 4 )
= (x - y)(x + y)(x 2 + y 2 )(x 4 + y 4 )

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