What is the answer4m2+5m2-8m-10

Question

4m3+5m² -8m-10

Answer 1

4m³+5m²-8m-10=0

(4m³+5m²)-(8m+10)=0

m²(4m+5)-2(4m+5)=0

(m²-2)(4m+5)=0

(m+√2)(m-√2)(4m+5)=0

m+√2=0    m-√2=0   4m+5=0

m=√2, -√2 and -5/4