Quadratic EquationHard
Question
Which of the following equations has 1 and − 2 as the roots -
Options
A.x2 − x − 2 = 0
B.x2 + x − 2 = 0
C.x2 − x + 2 = 0
D.x2 + x + 2 = 0
More Quadratic Equation Questions
The number of real roots of the eqaution |x2 + 4x + 3| + 2x + 5 = 0 is -...If the equations $ax^{2} + bx + c = 0$ and $cx^{2} + bx + a = 0,a,b,c \in R$ and $ac \neq 0$ have $a$ common non real ro...Three real numbers $x,y,z$ are such that $x^{2} + 6y = - 17,y^{2} + 4z = 1$ and $z^{2} + 2x = 2$. Then the value of $x^{...The equation $x^{4} - 9x^{3} + 2(10 - a)x^{2} + 9ax + a^{2} = 0$ for $x$ where ' $a$ ' is real parameter has...The equation $x^{2} - 4ax + 1 = 0$ has real roots gien by $\alpha$ and $\beta$, where a is real. Then the complete set o...