nilai limit x mendekati 4 akar x + 5 dikurang akar 4 X min 7 per akar 3 x min 3 dikurang akar 2 x + 1 adalah

Lim √x + 5 - √4x - 7 / √3x - 3 - √2x + 1
x→4

Lim x + 5 - (4x - 7)
x→4 .. / (√3x - 3 - √2x + 1)(√x + 5 + √4x - 7)

Lim -3x + 12 (√3x - 3 + √2x + 1)
x→4 .. / (3x - 3 - (2x + 1))(√x + 5 + √4x - 7)

Lim -3(x - 4)(√3x - 3 + √2x + 1)
x→4 .. / (x - 4)(√x + 5 + √4x - 7)

Lim -3 (√3x - 3 + √2x + 1)
x→4 .. / (√x + 5 + √4x - 7)

= -3 (√3(4) - 3 + √2(4) + 1 / √4 + 5 + √4(4) - 7

= -3 (√12 - 3 + √8 + 1) / √9 + √16 - 7

= -3 (√9 + √9) / (√9 + √9)

= -3