solve using this formula method 3m^2 + 8m +5= 0
Answers
Answer:
The first term is, 3m2 its coefficient is 3 .
The middle term is, -8m its coefficient is -8 .
The last term, "the constant", is +5
Step-1 : Multiply the coefficient of the first term by the constant 3 • 5 = 15
Step-2 : Find two factors of 15 whose sum equals the coefficient of the middle term, which is -8 .
-15 + -1 = -16
-5 + -3 = -8 That's it
Step-3 : Rewrite the polynomial splitting the middle term using the two factors found in step 2 above, -5 and -3
3m2 - 5m - 3m - 5
Step-4 : Add up the first 2 terms, pulling out like factors :
m • (3m-5)
Add up the last 2 terms, pulling out common factors :
1 • (3m-5)
Step-5 : Add up the four terms of step 4 :
(m-1) • (3m-5)
Which is the desired factorization
Step-by-step explanation:
Step-by-step explanation:
3m²+8m+5=0
3m²×5
15m²
/. \
3m. 5m=8m
3m²+3m+5m+5=0
3m(m+1)+5(m+1)=0
(3m+5)(m+1)=0
m=-5/3(or)-1