Aquí la solución:
(5m-9)(8m+2)=am²+bm+c
5m×8m-9×8m+5m×2-9×2=am²+bm+c
40m²-72m+10m-18=am²+bm+c
40m²-62m-18=am²+bm+c
a=40
b=-62
c=-18
3a-c+b
3(40)-(-18)+(-67)
120+18-62
138-62=76
" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
Aquí la solución:
(5m-9)(8m+2)=am²+bm+c
5m×8m-9×8m+5m×2-9×2=am²+bm+c
40m²-72m+10m-18=am²+bm+c
40m²-62m-18=am²+bm+c
a=40
b=-62
c=-18
3a-c+b
3(40)-(-18)+(-67)
120+18-62
138-62=76