Question

Ini gimana ya caranya? Makasih

Answer 1

Y  = x² + 3x
y = 2x + 2

x² + 3x = 2x + 2
x² + 3x - 2x - 2 = 0
x² + x - 2 = 0
(x + 2)(x - 1)
x = -2  x = 1



[(-1/3)x³ - 1/2x² + 2x]¹₋₂
{-1/3(1)³ - 1/2(1)² + 2(1)} - {-1/3(-2)³ - 1/2(-2)² + 2(-2)}
{-1/3 - 1/2 + 2} - {8/3 - 2 - 4}
-1/3 - 8/3 - 1/2 + 2 + 2 + 4
-3 -1/2 + 8
-1/2 + 10/2 = 9/2 satuan luas