Question

Really need help!!! quadratic equations UGH

Answer 1

2m³ + 10 m = 48

2m² + 10m - 48 = 0, solve this quadratic for m. Apply the formula:

m'=[-b + √(b²+4ac)]/2a and m" ==[-b - √(b²+4ac)]/2a

WHERE  a = 2, b=10, c= - 48
and you will find :
m=  3 and m= - 8 (answer a)

Answer 2

$2m^2 + 10m = 48\\ 2m^2+10m-48=0\\ m^2+5m-24=0\\ m^2-3m+8m-24=0\\ m(m-3)+8(m-3)=0\\(m+8)(m-3)=0\\ m=-8 \vee m=3$