exam Maths Puzzle Numerical Ability

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

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exam Other Question

The boundary line of y>3 is graphed, how do I determine the correct half-plane and complete the graph? I am having trouble factoring 6x^6-24x^4+18x^2---I cant figure out what to begin with when I start to factor. Should I take out a 3x^2?