What is the answer to 4m²- 40m plus 56 equals 0?

Answer 1

-24m = 56

Improved answer:

First divide all terms by 4 and then solve this quadratic equation by completing the square which will have two solutions:

m2-10+14 = 0

(m-5)2+14 = 0

(m-5)2+14-25 = 0

(m-5)2 = 11

m-5 = + or - the square root of 11

m = 5 + or 5 - the square root of 11

Alternatively you can solve this equation by using the quadratic equation formula which will give you the same answer.

Your tutor should be familiar with the above methods of solving quadratic equations if you aren't too sure.