SOLUTION: I need help with these problems Solve by using the quadratic formula: 3x^2=11x+4 and also find the axis of symmetry: y=-x^2+4x+2 Thanks a million

Question 93122: I need help with these problems
Solve by using the quadratic formula: 3x^2=11x+4

and also find the axis of symmetry: y=-x^2+4x+2

Thanks a million
Answer by Earlsdon(6294) (Show Source): You can put this solution on YOUR website!
1) Solve using the quadratic formula:

First, write the equation in standard form for quadratic equations:

Here, you can see that: a = 3, b = -11, and c = -4
Make the appropriate substitutions into the formula and solve for x:
Simplify this.

or
or
or
2) Find the axis of symmetry for:

The axis of symmetry is given by:

Your equation here is already in standard form: so a = -1, b = 4, and c = 2
The axis of symmetry is:

This is the equation of axis of symmetry!
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