Completing square

Solve the quadratic equation: m2=4m+20 using completing the square method

Correct answer:

m1 =  6.899
m2 =  -2.899

Step-by-step explanation:

m2 = 4m+20 m24m20 = 0 (m2)2420 = 0 (m2)224 = 0 (m2)2 = 24 m2 = ± 24  m1=2+24=6.899

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