3 years ago

Consider the graph of the quadratic function y=3x↑2↓-3x-6.what are the solutions of the quadratic equation 0=3x↑2↓-3x-6

1 answer:

7 0

X = 2 or -1

factors to 3(x-2)(x+1)=0

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TEA [102]

Answer:

$f$ is sometimes positive and sometimes negative.

Step-by-step explanation:

$f(x)=(x-3)(x+2)(x+4)(x+4)(x-1)(2x-9)$

Take $x=-1\in(-2,\frac{9}{2})\ as-2$

$f(-1)=(-1-3)(-1+2)(-1+4)(-1-1)(-2-9)\\\\=(-4)(1)(3)(-2)(-11)\\\\=-264\\\\f(-1)$

Take $x=2\in(-2,\frac{9}{2})\ as\ -2$

$f(2)=(2,-3)(2+2)(2+4)(2-1)(2\times2-9)\\\\=(-1)(4)(6)(1)(-5)\\\\=120\\\\f(2)>0$

Hence $f(x)$ for $x=-1$ and $f(x)>0$ for $x=2$

So $f$ is sometimes positive and sometimes negative in the interval.

3 0

3 years ago

melomori [17]

Answer:

Yes.

Step-by-step explanation:

Any three points are always coplanar.

5 0

3 years ago

pochemuha

<span>0.950. Hope this helps. :)</span>

5 0

3 years ago

erastova [34]

The answer is 4 i think

7 0

3 years ago

alexira [117]

40 over 100 and 55 over n cross multiply 55 x 100 and divide by 40.which gives you 137.5

4 0

3 years ago