Question

The roots of the quadratic polynomial 2x^

+ 9x+7=0 is? ​

Answer 1

Answer:

(X+7) and (x+2)

x = -7 and -2 are the roots of this equation

Answer 2

Answer:

x = -1 , -7/2

Note:

• The possible values of the variable which satisfy the equation are called its roots.

Solution:

Here,

The given equation is :

=> 2x² + 9x + 7 = 0

=> 2x² + 2x + 7x + 7 = 0

=> 2x(x + 1) + 7(x + 1) = 0

=> (x + 1)(2x + 7) = 0

=> x + 1 = 0 OR 2x + 7 = 0

=> x = -1 OR 2x = -7

=> x = -1 OR x = -7/2

Hence,

The required roots of the given quadratic equation are : x = -1 , -7/2