UngJae0213
17.10.2019 •
Mathematics
Find the roots of this equation 7xsquare - 5x - 2 = 0
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Ответ:
x = 1, -2/7
Step-by-step explanation:
You could use the quadratic equation but this can be factored into
(7x + 2) (x - 1). You can verify that by multiplying it out.
Since (7x + 2) (x - 1) = 0, if either factor is 0 then the equation would be equal to 0, thus we get x = 1, -2/7
Ответ:
40÷85 =÷ 0.47058823529