Try lang po.
Formula: y < x² + 4x - 5
1. A (-2,5)
5 < (-2)² + 4(-2) - 5
5 < 4 + 4(-2) - 5
5 < 4 - 8 - 5
5 < -4 - 5
5 < -9 FALSE, A IS NOT A SOLUTION.
2. B (6, -2)
-2 < (6)² + 4(6) - 5
-2 < 36 + 4(6) - 5
-2 < 36 + 24 - 5
-2 < 60 - 5
-2 < 55 TRUE, B IS A SOLUTION.
3. C (-3, 2)
2 < (-3)² + 4(-3) - 5
2 < 9 + 4(-3) - 5
2 < 9 - 12 - 5
2 < -3 - 5
2 < -8 FALSE, C IS NOT A SOLUTION.
4. D (1, -1)
-1 < (1)² + 4(1) - 5
-1 < 1 + 4(1) - 5
-1 < 1 + 4 - 5
-1 < 5 - 5
-1 < 0 TRUE, D IS A SOLUTION.
5. E (2, -2)
-2 < (2)² + 4(2) - 5
-2 < 4 + 4(2) - 5
-2 < 4 + 8 - 5
-2 < 12 - 5
-2 < 7 TRUE, E IS A SOLUTION.
