Question

(x^2+2x)^2=2x^4+3+4x^2 is not quadratic equation give reason​

Answer 1

it's not a quadratic equation as the highest power of variable is 4.

Step-by-step explanation:

(x^2+2x)^2=2x^4+3+4x^2

(x²)² + 2×x²×2x + (2x)² = 2x⁴ + 3 + 4x²

x⁴ + 4x³ + 4x² = 2x⁴ + 3 + 4x²

-2x⁴ - 3 - 4x² + x⁴ + 4x³ + 4x² = 0

-x⁴ + 4x³ - 3 = 0

x⁴ - 4x³ + 3 = 0

it's not a quadratic equation as the highest power of variable is 4.