Worksheet 2 (factorization) CBSE VIII
- · Factories
a) Method of common factors
1. 10a2b2 ̶ 20 a3b +15 ab3
2. 3x (x2 ̶ 25) ̶ 5 (x + 5)
3. ̶ 1/4 a2 + 1/8 a 2
b2 ̶ 1/16 a3b3
b) Method of regrouping
1. 6y + y2 ̶ xy ̶ 6x
2. x3 ̶ x2z
+ xz2 ̶ z3
3. x2yz + xy + xz + 1
c) using suitable identity
1. x 2 ̶ 8x + 16
2. 1/4 + 3x + 9x2
3. x2/16 ̶ y2/25
4. m2 + 2mn + n2 ̶ a2
5. 49/4 ̶ 7p
+ p2
d) By splitting the middle term
1. P2 ̶ 14p ̶ 51
2. m2 + 6m ̶ 16
3. q2 ̶ 8q + 15
4. (a+2)2 ̶ 10 (a+2) + 25
5. 3x + 2 ̶ 2x2
- · Divide : using factorization
1. ( 144 - 4x2) Divided by (2x + 12)
2. (25 y2 + 36x2 ̶ 60xy) divided by (5y - 6x)
3. (x2 + 9x + 20)divided by ( x + 4)
4. (4x2 ̶ 4x ̶ 120)divided by ( x + 5)
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