Mathematics
If x = -2 is one of the solutions of the quadratic equation x<sup>2</sup> + 3a - x = 0, then the value of 'a' is : 1. -8 2. -2 3. 4.
Related Questions
If -4x > 8y; then
x > 2y
x > -2y
x < -2y
x < 2y
The value/s of 'k' for which the quadratic equation 2x2 - kx + k = 0 has equal roots is (are) :
0 only
4, 0
8 only
0, 8
In solving a quadratic equation, one of the values of the variables x is 233.356. The solution rounded to two significant figures is :
233.36
233.35
233.3
230
In the adjoining diagram, AB = x cm, BC = y cm and x - y = 7 cm. Area of △ ABC = 30 cm2. The length of AC is :
10 cm
12 cm
13 cm
15 cm
