-18
-6
\(-\frac{9}{2}\)
\(-\frac{3}{2}\)
Correct answer is D
The general quadratic equation
x2 - (sum of roots) x + (product of root) = 0
Comparing with the given equation
2x2 +3x2 - 9 = 0; \(x^2 + \frac{3}{2}x - \frac{9}{2} = 0\\
Sum \hspace{1mm} of \hspace{1mm}roots = -\frac{3}{2}\)
Find the value of 2a - b if a + b = 8 and 4a - b = 22 ...
If P = {3, 5, 6} and Q = {4, 5, 6} then P∩Q equals ...
If a{\(\frac{x + 1}{x - 2} - \frac{x - 1}{x + 2}\)} = 6x. Find a in its simplest form...
Find the standard deviation of the numbers 6, 9, 10, 8 and 7 ...
The variance of x, 2x, 3x, 4x and 5x is ...
In the diagram, PQ is a straight line. Calculate the value of the angle labelled 2y ...