1. What is the value of 7 + 2a2 when a = 6?
2. What is the value of 2x2 + 3 when x = 60?
3. What is the value of 35 + 4y2 when y = −5?
4. What is the value of 10 + 3a2 + b when a = 4 and b = −7?
5. What is the value of 4 + x2y + z when x= −3, y = −7 and z = 6?
6. What is the value of 2a2 + 10ab − 3b2 when a = 7 and b = −3?
7. What is the value of 3a + 4a2 + 6b − b2 when a = 5 and b = 9?
8. What is the value of 9a + 2a2 + 20ab + 7b − b2 when a = 3 and b = 4?
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