Advanced Math practice question

Answer: 2

x⁴ = 16 has real solutions x = 2 and x = −2 only (x² = −4 gives no real x): two intercepts.

Common wrong answers

If you answered 0

0 would mean the graph never reaches the x-axis, but y = 0 at x = ±2.

If you answered 1

1 misses x = −2.

If you answered 4

4 counts the complex solutions of x² = −4 as intercepts.

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