Please Factorize: X^2+4x+3
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Please Factorize: X^2+4x+3

[From: ] [author: ] [Date: 12-02-14] [Hit: ]
Inside, Last),The two middle terms combine. Thats why you need numbers whose sum is 4.You will also notice that since the last terms are 3 and 1, that the last term when you multiply will be their product.......
please explain to me how to do it step by step with words. thanks

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You need to find two numbers whose product is 3 and whose sum is 4.

Those numbers are 3 and 1.

(x + 3)(x + 1)

If you look at the way that factored, you can multiply using the FOIL method (First, Outside, Inside, Last), and you will get

x^2 + x + 3x + 3

The two middle terms combine. That's why you need numbers whose sum is 4.

x^2 + 4x + 3

You will also notice that since the last terms are 3 and 1, that the last term when you multiply will be their product.



ANSWER

(x + 3)(x + 1)
1
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