Explicación paso a paso:
f(x) = - 6x + 5 y
g(x) = 7 - 8x
Hallar:
(f+g) (x) = f(x)+ g(x)
(f+g) (x) = - 6x + 5+ 7 - 8x
(f+g) (x) = -14x+12
( f – g )( x ) = f ( x ) – g ( x )
( f – g )( x )=(- 6x + 5)-(7 - 8x)
( f – g )( x )= -6x+5-7+8x
( f – g )( x )= 2x-3
( fg )( x ) = f ( x ) × g ( x )
( fg )( x ) = (- 6x + 5)(7 - 8x)
( fg )( x ) = 48x²-82x+35
