Question

Factor the polynomial by grouping. 5x^4-2x^2+20x^2-8

Answer 1

5x^4+18x^2-8

Answer 2

=5x^4+(-2+20)x^2-8
=5x^4+(18)x^2-8
=5x^4+18x^2-8
=(x^2+4)(5x^2-2)

(gave it a shot!!) :)

Answer 3

Thank you! :)