Question

Complete the following activity to solve the given quadratic equation by

formula method.

2x2 + 13x + 15 = 0

Activity :2x2 + 13x + 15 = 0

a= (__) , b = 13, c = 15

b

2 – 4ac = (13)2 - 4 x 2 x (__)

= 169 – 120

b

2 – 4ac = 49

=

− ± √

2 − 4

2

=

−(__ ) ± √49

4

=

−13 ± (__)

4

=

6

4

=

−20

4

X = (_) or x = (__)​

Answer 1

Answer:

x= -5/1      or        x= 3/2