Mathematics
If x = 1 is a root of the equation √x + kx - 2 = 0; the value of k is : 1. 1 2. -1 3. 2 4. -2
Related Questions
If x2 - 4x = 5, the value of x is :
5
-1
5 or -1
5 and -1
If x2 - 7x = 0, the value of x is :
7
0
0 and 7
0 or 7
A quadratic equation ax2 + bx + c = 0 ; where a, b and c are real numbers and a ≠ 0.
Assertion (A): The roots of equation 2x2 + 5x - 3 = 0 are real and unequal.
Reason (R): For the equation ax2 + bx + c = 0, the roots are real and unequal if b2 - 4ac > 0.
A is true, R is false.
A is false, R is true.
Both A and R are true and R is correct reason for A.
Both A and R are true and R is incorrect reason for A.