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7. Factorisation
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Q14 of 137 Page 101

Factorize:

9y2 – 12y + 4

Given,


9y2 – 12y + 4


By using the formula (a – b)2 = a2 – 2ab + b2


We get,


= (3y)2 – 2 × 3y × 2 + (2)2


= (3y – z)2


More from this chapter

All 137 →
12

Factorize:

121a2 – 88ab + 16b2

13

Factorize:

1 – 6x + 9x2

15

Factorize:

16x2 – 24x + 9

16

Factorize:

m2 – 4mn + 4n2

Questions · 137
7. Factorisation
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