Simplify the expressions below. Write the final product in standard form and show your work to receive full credit.

(x2 + 4x – 3)(2x2 + x + 6)

My answer for this is:
2x^4 + 9x^3 + x^2 + 25x - 18

but I don't think that's right, can someone help me figure out what I did wrong??

Question

Simplify the expressions below. Write the final product in standard form and show your work to receive full credit.

(x2 + 4x – 3)(2x2 + x + 6)

My answer for this is:
2x^4 + 9x^3 + x^2 + 25x - 18

but I don't think that's right, can someone help me figure out what I did wrong??

anonymous · Answer

Here's how I got my answer...

(x^2)(2x^2) = 2x^4
(x^2)(x) = x^3
(x^2)(6) =  6x^2

(4x)(2x^2) = 8x^3
(4x)(x) = 4x
(4x)(6) = 24x

(-3)(2x^2) = -6x^2
(-1)(x) = -3x
(-1)(6) = -18