The roots of a quadratic equation $(x+2)^{2}=16$ are ..... .
- A$2$ and $3$
- B$3$ and $4$
- C$6$ and $-2$
- D$-6$ and $2$
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Similar Questions
Find the roots of the following quadratic equation by the method of completing the square: $m^{2}-18m+81=0$
Medium
View SolutionWhich of the following groups correctly matches the data of Part $I$ with the data of Part $II$?
Part $I$ Part $II$ $1.$ The discriminant of $x^{2}+5x+6=0$ $a. 1$ $2.$ The discriminant of $x^{2}+5x+4=0$ $b. 9$ $3.$ The discriminant of $x^{2}+4x+3=0$ $c. 4$ $4.$ The discriminant of $x^{2}+6x+5=0$ $d. 16$
| Part $I$ | Part $II$ |
| $1.$ The discriminant of $x^{2}+5x+6=0$ | $a. 1$ |
| $2.$ The discriminant of $x^{2}+5x+4=0$ | $b. 9$ |
| $3.$ The discriminant of $x^{2}+4x+3=0$ | $c. 4$ |
| $4.$ The discriminant of $x^{2}+6x+5=0$ | $d. 16$ |
Difficult
View SolutionWhich constant should be added and subtracted to solve the quadratic equation $4x^{2} - \sqrt{3}x - 5 = 0$ by the method of completing the square?
Easy
View SolutionSolve the following equation using the quadratic formula,if the equation has a solution in $R$: $9x^2 + 6x + 4 = 0$.
Easy
View SolutionIf $x=-2$ is a solution of a quadratic equation $k x^{2}+5 x+2=0,$ then $k=\ldots \ldots \ldots \ldots$
Medium
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