Question

3) Solve the following quadratic equations by
formula method
a) 5m2 - 4m -2 = 0​

Answer 1

Here is the answer.

Refer to the Attachment.

Answer 2

Answer:

Step-by-step explanation:

Let p ( m ) 5m² - 4m - 2 = 0

By comparing with ax²+ bx + c = 0 , we have a = 5 , b = - 4 and c = - 2.

By using quadratic formula,

x = - b ± √b² - 4ac /2a

= - ( - 4 ) ± √ ( - 4 )² - 4 ( 5 ) ( - 2 ) / 2 ( 5 )

= 4 ± √16 + 40 / 10

= 4 ± √56 / 10

= 4 ± 2√14 / 10

= 2 ( 2 ± √14 ) / 2 ( 5 )

= 2 ± √14 / 5 is the answer