plzz ans... its my exam tomorrow plzzzzz...
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- 3x^2 + 19x + 30
- 3*30 =90
- the factors of 90 is 10+9
- 3x^2+(10x+9x)+30
- x(3x+10)+3(3x+10)
- (x+3) (3x+10)
- solve all the question like this
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