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7. Factorisation
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Q29 of 137 Page 102

Factorize:

3x2 + 10x + 8

Given,


3x2 + 10x + 8


Now first find the numbers whose-


Sum = 10 and


Product = 3 × 8 = 24


Required numbers are 6 and 4,


So we get;


3x2 + 10x + 8


= 3x2 + 6x + 4x + 8


= 3x(x + 2) + 4(x + 2)


= (x + 2)(3x + 4)


More from this chapter

All 137 →
27

Factorize:

z2 – 12z – 45

28

Factorize:

x2 – 4x – 12

30

Factorize:

3y2 + 14y + 8

31

Factorize:

3z2 – 10z + 8

Questions · 137
7. Factorisation
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