Taking out HCF
Perfect Squares
By Grouping
Mix
Extras
100

25a - 15

5(5a - 3)

100

x2 - 81

(x + 9) (x - 9)

100

x2+3x+2x+6

(x+3)(x+2)

100

5x+2x+x2+10

(x + 5)(x + 2)

100

Expand 

(3x−b)(c−b)

3xc - bc - 3bx + b2

100

7ab−28ab2

7ab(1-4b)

100

25x2 - y2

(5x + y) (5x - y)

100

a2+5a−4a−20

(a+5)(a-4)

100

6m−n+3mn−2

(3m - 1)(2+n)

100

x2y−4xy+xy

xy(x-4+y)

100

2(a+3)+a(a+3)

(a +3)(2+a)

100

2a2−50

2(a+5)(a-5)

100

x2−3x−3xc+9c

(x-3)(x-3c)

100

2x2−9−6x+3x

(2x+3)(x−3)

100

(x−7)2−1

(x-6)(x-8)

100

6ab−10a2b+8ab2

2ab(3-5a+4b)

100

(h+3)2 -64

(h + 11)(h - 5)

100

5rs−10r+st−2t

(5r + t)(s - 2)

100

x2+10x+24

(x+4)(x+6)

100

16a2−49

(4a + 7) (4a - 7)

100

−12x2−16x

-4x(3x +4)

100

63−7a2b2

7(3+ab)(3-ab)

100

2ab−a2−2bc+ac

(2b - a)(a-c)

100

Expand 

(3x−b)(c−b)

3xc - bc - 3bx + b2

100

12x2y2  −12

12 (xy+1)(xy - 1)

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