use FOIL to find the product of each?

0 ⤊

how do i use FOIL on this problem

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

i got 25x - 4...

2007-04-22 15:18:37 · 4 answers · asked by Anonymous in Education & Reference ➔ Homework Help

5x + 2
5x^2 - 2
---------
25x^3 - 10x +10x^2 - 4 (terms are in the wrong order)
25x^3 + 10x^2 -10x - 4

2007-04-22 15:34:49 · answer #1 · answered by Steve A 7 · 0⤊ 0⤋

F: 5x* 5xÂ² = 25xÂ³
O: -10x
I: 10xÂ²
L: -4
Answer: 25xÂ³ + 10xÂ² -10x -4.

2007-04-22 22:39:36 · answer #2 · answered by steiner1745 7 · 0⤊ 0⤋

25x^2 -10x +10x^2 -4
30x^2 -10x -4 is the final answer.

2007-04-22 22:22:34 · answer #3 · answered by go go godzilla! 4 · 0⤊ 1⤋

You did it right, but missed the squared part. Square the second 5x and then try it again.

2007-04-22 22:24:32 · answer #4 · answered by Anonymous · 0⤊ 0⤋