SOLUTION: Using the quadratic formula, solve the following equation for X. Express your solution both in radical format and as decimals rounded to two decimal places. 3x^2+9x=-4

Question 151911: Using the quadratic formula, solve the following equation for X.
Express your solution both in radical format and as decimals rounded to two decimal places.
3x^2+9x=-4
Answer by jim_thompson5910(35256) (Show Source): You can put this solution on YOUR website!

Start with the given equation.

Add 4 to both sides.

Notice we have a quadratic equation in the form of where , , and

Let's use the quadratic formula to solve for x

Start with the quadratic formula

Plug in , , and

Square to get .

Multiply to get

Subtract from to get

Multiply and to get .

or Break up the expression.

So our answers are or

which approximate to or

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