Algebrahard · Past Paper
Factorize: x^4 + x^2 + 25
A(x^2+3x+5)(x^2-3x+5)
B(x^2+5x+5)(x^2-5x+5)
C(x^2+5)^2 - 9x^2
DBoth a and c
✓ Correct Answer: D — Both a and c
(x^2+5)^2 - 10x^2 + x^2 = (x^2+5)^2 - 9x^2 = (x^2+5+3x)(x^2+5-3x).
Share this question
✓ Correct Answer: D — Both a and c
(x^2+5)^2 - 10x^2 + x^2 = (x^2+5)^2 - 9x^2 = (x^2+5+3x)(x^2+5-3x).
Share this question