Question

solve the quadratic equation
30m^2-77m-48=0​

Answer 1

Step-by-step explanation:

BY THE QUAD. FORMULA

$d = b {}^{2} - 4ac$

$x = \frac{(- b + - \sqrt{d})}{2a}$

Answer 2

Step-by-step explanation:

by completeing the square method

30m^2-77m-48

m^2-77m/30-48/30

m^2-77m/30 + (77/30*1/2)^2=48/30

(m-77/60)^2=48/30-(77/60)^2

(m-77/60)^2=48/30-5929/3600

(m-77/60)^2=-169/3600

m-77/60=+-13/60

m=+-13/60+77/60

m=3,64/60