2⁴ + 3⁴ + 4⁴ + 5⁴ + 6⁴ + 7⁴ + 8⁴ + 9⁴ – 10⁴ =
Pertanyaan:
Jawaban dengan langkah-langkah:
Kesimpulan:
SOAL
2⁴ + 3⁴ + 4⁴ + 5⁴ + 6⁴ + 7⁴ + 8⁴ + 9⁴ – 10⁴ =
PENYELESAIAN
= 2⁴ + 3⁴ + 4⁴ + 5⁴ + 6⁴ + 7⁴ + 8⁴ + 9⁴ – 10⁴
= (2 × 2 × 2 × 2) + (3 × 3 × 3 × 3) + (4 × 4 × 4 × 4) + (5 × 5 × 5 × 5) + (6 × 6 × 6 × 6) + (7 × 7 × 7 × 7) + (8 × 8 × 8 × 8) + (9 × 9 × 9 × 9) – (10 × 10 × 10 × 10)
= (4 × 2 × 2) + (9 × 3 × 3) + (16 × 4 × 4) + (25 × 5 × 5) + (36 × 6 × 6) + (49 × 7 × 7) + (64 × 8 × 8) + (81 × 9 × 9) – (100 × 10 × 10)
= (8 × 2) + (27 × 3) + (64 × 4) + (125 × 5) + (216 × 6) + (343 × 7) + (512 × 8) + (729 × 9) + (1.000 × 10)
= 16 + 81 + 256 + 625 + 1.296 + 2.401 + 4.096 + 6.561 – 10.000
= 97 + 256 + 625 + 1.296 + 2.401 + 4.096 + 6.561 – 10.000
= 353 + 625 + 1.296 + 2.401 + 4.096 + 6.561 – 10.000
= 978 + 1.296 + 2.401 + 4.096 + 6.561 – 10.000
= 2.274 + 2.401 + 4.096 + 6.561 – 10.000
= 4.675 + 4.096 + 6.561 – 10.000
= 8.871 + 6.561 – 10.000
= 15.332 – 10.000
= 5.332