If the discriminant of x2 - mx + n = 0 is zero. Then the solution is _____.
-m/2
-m
m/2
m
The standard form of homogenous expression of first degree in two variables x and y is _________.
ax + by
x2 + y2
xy
x2y + y2x
Which of the following equation has products of roots zero?
x2 + 8x + 16 = 0
x2 - 8x + 16 = 0
x2 - 8x - 1 = 0
x2 - 5x = 0
If α, β are the roots of a quadratic equation ax2 + bx + c, then α + β is ________.
a
a/b
-b/a
c/a
Which of the following is the discriminant of the equation 3x2 + 2x - 1 = 0?
8
-8
12
16
Graph of a linear equation is ___________.
Straight line
Parabola
Hyperbola
Circle
If m and n are the roots of x2 - 7x + 6 = 0, then value of m2n + mn2 is _________.
42
-42
32
-32
If p and q are the roots of x2 + 8x + 15 = 0. Then the value of p2 + q2 is ___________.
64
30
34
48
If one root of a quadratic equation is ( 3 + √2) and the sum of its roots is 6, then the equation is _______________.
x2 + 6x + 11 = 0
x2 - 6x + 11 = 0
x2 - 6x + 7 = 0
x2 + 6x + 7 = 0
The middle term of the expansion of ( x/y + y/x )8 is ____________.
8c3
8c4
8c5
8c6