x4+x2-20

A (x²-5) (x²+4)

B (x²+5) (x²-4)

C (x²-5) (x²-4)

D (x²-5) (x²+4)

Solution

Correct Answer: Option B

x4+x2-20
= x4+5x2-4x²-20
= x²(x²+5) - 4(x²+5)
∴(x²+5)(x²-4)

Practice More Questions on Our App!

Download our app for free and access thousands of MCQ questions with detailed solutions

Download Android App Login to Website

Related Topics