Question

solve the following equation. 10x² -9 - x⁴ = 0 please give correct answer incorrect answer will be reported ......​

Answer 1

Answer:

x = ± 3

x = ± 1

Step-by-step explanation:

10x² -9 - x⁴ = 0   *(-1)

x⁴ - 10x² + 9 = 0

u = x²

u² - 10u + 9 = 0

(u - 9)(u - 1)=0

u - 9 = 0

u = 9

x² = 9

x = ± 3

u - 1 = 0

u = 1

x² = 1

x = ± 1