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1
❤MAY IT WILL HELP YOU ❤
darkcrafter09:
Where do I learn that TEX language ?
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0
(a-b-c)²-(a-b-c)²-4b²+4c²
0-4b²+4c²
4c²-4b²
(2c)²-(2b)²
(2c+2b)(2c-2b)
2(c+b)(c-b)
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