Question

soal matematika X.
minta tolong ya kak..
beserta caranya.. pliss.. dikumpulkan besok:(.
tolong ya... terimakasih kak

Answer 1

#F

(8) f(x ) = |2x - 1| dan g(x) = |5 - x| , nilai f(3) - g(3) =

= |2x3 - 1| - |5 -3|

= |6 - 1| - |5 -3|

= |5| - |2|

= 5 - 2 = 3

(9) |x + 4| + | 5 - 2x| - |x - 2| , untuk x > 10

= +(x +4) + (- (5 - 2x)) - (+(x -2))

= x + 4 - 5 + 2x - x + 2

= 2x + 1

(10) |3x - 6| - |x - 4| |x + 1| untuk 2 < x< 4

= +(3x - 6) - ( -(x - 4)(x+ 1))

= 3x - 6 + (x - 4)(x + 1)

= 3x - 6 + x² - 3x - 4

= x² -10