Question

Evaluate the expression if a=−1, b=4, and c=6.

3c2+2c+2c2

Answer 1

192

Explanation:

3c²+2c+2c²

When a=−1, b=4, and c=6, then

• 3c²+2c+2c²
• 3(6)²+2×6+2(6)²
• 3×36+12+2×36
• 108+12+72
• 192

Answer 2

192

Explanation:

3c²+2c+2c²

3(6)² + 2(6) + 2(6)²

3(36) + 12 + 2(36)

108 + 12 + 72

= 192