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bri9263
10.10.2019 •
Mathematics
Which shows the correct substitution of the values a, b, and c from the equation –2 = –x + x2 – 4 into the quadratic formula?
quadratic formula: x =
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Ответ:
-2 = -x + 2x - 4
+4 +4
2 = x
However, for quadratic equation, there needs to be 3 numbers:
ax^2+bx+c=0
Putting the equation in this form, we can say that
(0)x^2+(1)x+(-2)=0
Taking that and putting it into the quad formula makes:
x=(-1+-sqrt((1)^2-4(0)(-2)))/2(0)
That makes it a divide by 0 problem, making it unsolveable
Ответ:
y=-2x+4