hunteNor5emon8jaidre
hunteNor5emon8jaidre hunteNor5emon8jaidre
  • 15-08-2016
  • Mathematics
contestada

Factor completely: x2 - 10x + 25

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dasetka
dasetka dasetka
  • 15-08-2016
Since the first term is x², you know that each group will begin with x. To find the second part of the groups, you need to find two numbers that add up to 10 and multiply to 25. You can do this by listing all the factors of 25 until you find a set that adds to 10.

25 x 1
5 x 5
-5 x -5

The second terms in your groups will be -5 and -5.

(x - 5) (x - 5)   This can be simplified to (x - 5)².
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Hussain514 Hussain514
  • 16-08-2016
x2 + -10x + 25 = 0
25 + -10x + x2 = 0
(5 + -1x)(5 + -1x) = 0
5 + -1x = 0
0 + -1x = 0 + -5 -1x = 0 + -5

x = 5
Answer Link

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