Algebra
Polynomials
Practice Test

Question 2 of 3
(d + f)(r + s) = ?
2(dr + ds + fr + fs)
dr + ds + fr + fs
2dr \\(\\times\\) 2ds \\(\\times\\) 2fr \\(\\times\\) 2fs
2(dr \\(\\times\\) ds \\(\\times\\) fr \\(\\times\\) fs)