Math, asked by kv213184, 8 months ago

1) m



− 5m − 14 = 0 using quadratic froumla​

Answers

Answered by nOTsOcOOL
0

Answer:

>>  It should be m^2 - 5m - 14 = 0 for it to be quadratic equation ryt?

>> quadratic formula is :

                                                     [-b ± (b^2 - 4*a*c)^(1/2) ] / 2*a

>> In this equation

                                       b: -5

                                       a: 1

                                       c: -14

>>Using quadratic formula:

                                          [5 ± {5^2 - 4*1*(-14)}^(1/2) ] / 2*1

                                       

                                           [5 ± {25 - (-56)}^(1/2) ] / 2

                                           [5 ± (81)^(1/2) ] / 2

                                           5 ± 9 / 2

                                           7 or -2

>> Hence, roots of quadratic equation are 7 or -2.

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