Agar y= x+2 memotong parabola y= x2+5x+p+4 maka nilai p adalah

jawab

y = x + 2
y = x² + 5x + p+4

x² + 5x + p+ 4 = x + 2
x² + 4x + p+ 2 = 0
a = 1
b = 4
c = p+ 2

D = 0
b² - 4ac =0
4² = 4(1)(p+2)
16= 4(p+2)

p+2 = 4
p = 2