47.0k views
5 votes
The equation 3x2 = 6x - 9 has two real solutions
True
False

User Noya
by
7.5k points

1 Answer

7 votes

Answer: FALSE

Explanation:

The first step is to rewrite the equation in the form
ax^2+bx+c=0, then:


3x^2 = 6x - 9\\3x^2-6x +9=0

Now, we need to calculate the Discriminant with this formula:


D=b^2-4ac

We can identify in the given equation that:


a=3\\b=-6\\c=9

Then, we only need to substitute these values into the formula:


D=(-6)^2-4(3)(9)


D=-72

Since
D<0 then the equation has no real solutions.

User BiigNiick
by
5.9k points
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