1) m
− 5m − 14 = 0 using quadratic froumla
Answers
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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