Question

1.sederhanakanlah
a.-2(m+3)-4(2m-2m(m+5)-8)
b.3(6a-(a+b))+3(-2(2a+3b)+4( a-b)

Answer 1

A. - 2(m+3) - 4(2m - 2m(m+5)-8)
   = - 2m -6 - 4 ( 2m - 2m^2 - 10m - 8)
   = - 2m - 6 - 4 ( - 8m - 2m^2 - 8)
   = - 2m - 6 + 32m + 8m^2 + 32
   = 8m^2 + 30m + 26

b. 3( 6a - (a+ b)) + 3( - 2(2a+3b) + 4(a-b))
  = 3 (6a - a -b) + 3 (( -4a - 6b) + 4a - 4b )
  = 3 ( 5a - b) + 3 ( -10b)
  = 15a - 3b - 30b
  = 15a -33b