Question

1 - 2.25x^8
Factor this

Answer 1

(1+3/2x^4)(1-3/2x^4) = (1+1.5x^4)(1-1.5x^4)

Explanation:

2.25 = 9/4

putting decimals into fractions will make this easier

9/4 = 3/2 * 3/2

a²-b² = (a+b)(a-b)

1 - 2.25x^8 = 1²-(3/2x^4)² = (1+3/2x^4)(1-3/2x^4) = (1+1.5x^4)(1-1.5x^4)