Nilai dari [2017 x (2016² – 16) x 2015] / [2020 x (2016² – 1)] adalah ....
Pembahasan :
Misal a = 2016
[(a + 1) x (a² – 16) x (a - 1)] / [(a + 4) x (a² – 1)]
[(a + 1) x (a² – 16) x (a - 1)] / [(a + 4) x (a² – 1)]
[(a + 1) x (a + 4)(a - 4) x (a - 1)] / [(a + 4) x (a – 1)(a + 1)]
tinggal disederhanakan menjadi
a - 4
2016 - 4
2012
Jawabannya 2012