Question

Factor 9x^4 -225y^8 10 points

Answer 1

9(x² + 5y⁴) (x² - 5y⁴)

Explanation:

9x⁴ - 225y⁸

factor out a 9

9(x⁴ - 25y⁸)

factor (x⁴ - 25y⁸)

(x⁴ - 25y⁸)

x² • x² = x⁴

5y⁴ • -5y⁴ = -25y⁸

(x² + 5y⁴) (x² - 5y⁴)

↓

9(x² + 5y⁴) (x² - 5y⁴)