0
3x² - 24x - 60 = 0; whence,
x² - 8x - 20 = (x - 10)(x + 2) = 0; and
x = 10 or -2.
Checking, we find that
3(10)² - 24(10) - 60 = 300 - 240 - 60 = 0, and
3(-2)² - 24(-2) - 60 = 12 + 48 - 60 = 0,
thus re-assuring us that we have solved correctly.
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∙ 14y ago
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