Question

(x^2 + 2x - 1)(x^2 + 2x + 5)

Answer 1

Multiply each piece of the first parentheses by each piece of the second. Add everything up and simplify.

Answer 2

In symbolic terms,

(x^2+2x-1)(x^2+2x+5) = x^2(x^2+2x+5) + 2x(x^2+2x+5)-1(x^2+2x+5)

Answer 3

x^4+8x^2+10x+4 is the answer I came up with

Answer 4

Hmm, ought to check your work to see where you made the mistake...

Answer 5

you're going to have an x^3 term in there somewhere, and the 4 is also incorrect