Red Curve: y = 2x³ - x² - 14x
Blue Curve: y = 4x - x²

Find the area of the shaded region.

Kenapa B) −5 salah ❌
Terlupa darab 3 × 4 = 12. Ramai yang guna 10 instead of 12 masa buat complete the square

Kenapa C) 5 salah❌
Terus ambil nilai pemalar +5 je tanpa buat full working. Nilai minimum bukan bermakna nilai pemalar!
Kenapa D) 7 salah ❌
Silap tanda! Jawapan dapat −7 tapi tulis +7. Jangan terlupa semak tanda positif dan negatif! 😭

Silap tanda dan silap kira je yang buat korang terlepas markah. Jadi semak balik working sebelum tulis jawapan final ye..

For those who need a hint.

This hint involves breaking the shaded region into multiple parts, but it's not the most efficient way.

There is another quicker way.

I didn't know it was in our textbook, pls take note about this...

From @ElTapturo

Also got the same answer as well.

Note that f(x) = red curve and g(x) = blue curve.

use this as your lock screen

lol 😂😂😂