lexijo122
15.07.2020 •
Mathematics
What is the difference? x+5/x+2-x+1/x2+2x
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Ответ:
Question
x+5/x+2 - x+1/x²+2x
= (x² - 4x - 1)/[x (x+2)]
= (x² - 4x - 1)/[x² + 2x]
Step-by-step explanation:
x + 5/x + 2 - x + 1/x² + 2x
We factorise the second denominator to give us :
x + 5/x + 2 - x + 1/x(x + 2)
We find the L.C.M of both denominators which is x(x+2).
[x(x + 5)-(x + 1)] / (x (x + 2))
Expand the bracket
=[x² +5x - x -1] / [x (x + 2)]
=(x² - 4x - 1) / [x (x + 2)]
= (x² - 4x - 1)/ [x (x + 2)]
= (x² - 4x - 1) / [x² + 2x]
Ответ:
5(4) – 6 + 5(4) – 6
Step-by-step explanation:
look at picture down below