emilyturchon
31.10.2019 •
Mathematics
2x^2 +bx−10=0, if one of its roots is 5
find x and b
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Ответ:
Step-by-step explanation:
if one of the roots is 5 then replace x with 5
2×5^2 + 5b - 10 = 0
50 + 5b -10 = 0
40 + 5b = 0
5b = -40
b = -8
Ответ: