Level 1
(2x+3)(2x−3)
4x2−9
(3p−3)(p−1)
3p2−6p+3
(4n+4)(4n-4)
16n2−16
(k−1)(k+1)
k2−1
(2p+3)2
4p2+12p+9
(5x−2)(5x−8)
25x2−50x+16
(n−1)(2n−2)
2n2−4n+2
(2n+3)(2n-3)
4n2 - 9
(2x-1)2
4x2-4x+1
(r+1)(r−3)
r2−2r−3
(v−1)(3v−3)
3v2−6v+3
(x+3)(x+4)
x2+7x+12
(3n+2)(n+3)
3n2+11n+6
(2x−3)2
4x2 − 12x + 9
(5v+4)(3v−6)
15v2−18v−24