7. Quadratic Equations

7. Quadratic Equations

12 Maths Exercise Solutions

 Check whether the following is a quadratic equation.

Exercise7.1(A), Question No.1
 Check whether the following is a quadratic equation.

Check whether the following is a quadratic equation:

Exercise7.1(A), Question No.2
Check whether the following is a quadratic equation:

Check whether the following are quadratic equations
(iii)

Exercise7.1(A), Question No.3
Check whether the following are quadratic equations
(iii)

Check whether the following are quadratic equations
(iv)
Exercise7.1(A), Question No.4
Check whether the following are quadratic equations
(iv)
Check whether the following is a quadratic equation :

Exercise7.1(A), Question No.5
Check whether the following is a quadratic equation :

Check whether the following are quadratic equations
(vi)
Exercise7.1(A), Question No.6
Check whether the following are quadratic equations
(vi)
Check whether the following is a quadratic equation or not.


Exercise7.1(A), Question No.7
Check whether the following is a quadratic equation or not.


Check whether the following are quadratic equations
(viii)
Exercise7.1(A), Question No.8
Check whether the following are quadratic equations
(viii)
Represent, the following  situation  in the form of quadratic equation
 The area of a rectangular plot is . The length of the plot (in metre) is one more than twice its breadth. We need to find the length and breadth of the plot.
Exercise7.1(A), Question No.9
Represent, the following  situation  in the form of quadratic equation
 The area of a rectangular plot is . The length of the plot (in metre) is one more than twice its breadth. We need to find the length and breadth of the plot.
The product of two consecutive positive integers is 306. We need
to find the integers.

Exercise7.1(A), Question No.10
The product of two consecutive positive integers is 306. We need
to find the integers.