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5 votes
What is the discriminant of the quadratic equation 3 - 4x = -6x^2

-68
-56
76
88

2 Answers

2 votes
The discriminant is -56.

The discriminant is found using

b²-4ac, after the quadratic is in standard form. First, we will add 6x² to both sides to write it in standard form:
3-4x=-6x²
3-4x+6x²=-6x²+6x²
6x²-4x+3=0

We can now see that b=-4, a=6 and c=3:

(-4)²-4(6)(3)
16-72
-56
User Mr Qian
by
6.2k points
4 votes

Answer: B) -56

Step-by-step explanation: In a quadratic equation, the discriminant helps tell you the number of real solutions and it is:


b^(2) -4ac

To calculate the discriminant of the given equation, we need to write it in the standard form (we equal it to zero):


6x^(2) -4x+3=0

here we can see that a=6; b=-4; and c=3

so the discriminant would be:


(-4)^(2) -4*6*3=

16-72=-56

User Kuslahne
by
5.7k points