Answer:
A. -1
Step-by-step explanation:
2x⁴ - 7x³ + 4x² + 7x - 6
2(1) - 7(-1) + 4(1) + 7(-1) - 6
2 + 7 + 4 - 7 - 6 = 0
6 + 7 - 7 - 6 = 0
2(256) - 7(64) + 4(16) + 7(4) - 6 = 0
512 - 448 + 64 + 28 - 6 = 0
604 - 454 is not equal to 0
2(625) - 7(125) + 4(25) + 7(5) - 6 = 0
1385 - 881 is not equal to 0
