Question

Evaluate the following expression using the values given: Find 2r2 + 3s3 − r2 + 4t2 − r2 if r = −2, s = −3, and t = 5. −19 −37 27 19

Answer 1

2r² + 3s³ - r² + 4t² - r² = 3s³ + 4t²
if s = -3 and t = 5
3s³ + 4t² = 3 * (-3)³ + 4 * 5² = 3 * (-27) + 4 * 25 = -81 + 100 = 19

Answer: 19