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OpenStudy (hippoharry):
Find the discriminant of the following equation. x^2 + 2x + 8 = 0 A. 36 B. -28 C. -30 D. 10
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OpenStudy (erak):
b^2 - 4ac again
OpenStudy (welshfella):
yea
OpenStudy (hippoharry):
im still confused because i got -124. so i dont know if i did something wrong. because i did 2^2-4(8)(4)
OpenStudy (erak):
a = 1, if there's no number in front of a variable, the coefficient is assumed to be 1
OpenStudy (welshfella):
yea
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OpenStudy (welshfella):
|dw:1463002899435:dw|
OpenStudy (hippoharry):
oh so its 2^2-4(1)(8)
OpenStudy (erak):
yeah
OpenStudy (welshfella):
correct
OpenStudy (hippoharry):
and -28 is the answer
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OpenStudy (erak):
yeah
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