brennarfa
12.07.2021 •
Mathematics
An integer is 18 more than 4 times another. If the product of the two integers is -18, then find the integers.
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Ответ:
Step-by-step explanation:
x = 4y+18
xy = -18
x = -18/y
-18/y = 4y+18
4y² + 18y + 18 = 0
2y² + 9y + 9 = 0
y = [-9 ±√(9²-4(2)(9))]/[2(2)] = [-9 ± 3]/4 = -1.5, -3
-1.5 is an extraneous solution, so y = -3
x = 6
Ответ:
112 square units its right. Mark me as brainliest plz!
Step-by-step explanation: