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Question

Factorize each of the following algebraic expression:
x2 + 14x + 45

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Solution

To factorise x2+14x+45, we will find two numbers p and q such that p+q=14 and pq=45.Now, 9+5=14 and 9×5=45Splitting the middle term 14x in the given quadratic as 9x+5x, we get:x2+14x+45=x2+9x+5x+45 =(x2+9x)+(5x+45) =x(x+9)+5(x+9) =(x+5)(x+9)

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