suku banyak f(x) jika dibagi (x+2) sisanya 13, sedangkan jika dibagi (2x-5) sisanya 4. tentukan sisanya jika f(x) dibagi 2x²-x-10?

S(x) = ax + b

f(-2) = -2a + b = 13
f(5/2) = 5/2a + b = 4

eliminasi b
-9/2b = 9
b = -2

subtitusi b
2a + b = 13
2a + (-2) = 13
2a = 13 + 2
2a = 15
a = 15/2

S(x) = 15/2x - 2