Jawaban:

1. limx→3 5x² = 45

2. limx→0 (5x+7) = 7

3. limx→-1 (3x³-9x) = 12

4. limx→3 √x²+9/x = √2

5. limx→3 x/√x²+5 = 3/√14

6. limx→2 (2x²+4x/x+2) = 4/3

Penjelasan dengan langkah-langkah:

1. limx→3 5x² = 5(3)² = 5.9 = 45

2. limx→0 (5x+7) = (5(0) + 7) = (0 + 7) = 7

3. limx→-1 (3x³-9x) = (3(-1)³ - 9(-1) = (3 - (-9) = 3 + 9 = 12

4. limx→3 √x²+9/x = √(3)² + 9 / 3 =√9+9/3 = √18/3 = 3√2/3 = √2

5. limx→3 x/√x²+5 = 3/√(3)² + 5 = 3/√9+5 = 3/√14

6. limx→2 (2x²+4x/x+2)⅓ = (2(2)² + 4(2) / 2 + 2)⅓ = (8+8/4)⅓ = (16/4)⅓ = (4)⅓ = 4/3

caranya dengan mensubstitusikan.

semoga membantu