Question

Evaluate the following expression using the values given.

Find 2x2 − 2z4 + y2 − x2 + z4 if x = −4, y = 3, and z = 2.

Answer 1

2x² - 2z⁴ + y² - x² + z⁴

If x=-4, y=3, z=2

2(-4)² - 2(2)² + (3)² - (-4)² + (2)⁴
2(16) - 2(4) + 9 - (16) + 16
32 - 8 + 9 - 16 + 16
33