How do u do horizontal method. Like if i asked you simplify. Use the horizontal method. (x^2+2x+1)(9x-3)?

0 ⤊

How do u do horizontal method. Like if i asked you simplify. Use the horizontal method. (x^2+2x+1)(9x-3)?

2007-05-02 01:22:19 · 3 answers · asked by ben h 1 in Science & Mathematics ➔ Mathematics

3 answers

(x² + 2x + 1)(9x - 3) =

9x³ + 18x² + 9x - 3x² - 6x - 3

Collecting like terms

9x³ - 18x² - 3x² + 9x - 6x - 3

9x³ - 15x² + 3x - 3

- - - - - - - - -s-

2007-05-02 03:10:27 · answer #1 · answered by SAMUEL D 7 · 0⤊ 0⤋

(x^2+2x+1)(9x-3) horizonal math in this problem is distribute like this

9x goes to all 3 parts
9x^3+18x^2+9x
then you u do the same thing for the 3
9x^3+18x^2+9x-3x^2-6x-3
then u simplify
9x^3+15x^2+3x-3

2007-05-02 01:27:57 · answer #2 · answered by arsani401 2 · 0⤊ 0⤋

you do the multiplications or division first then the rest and always start with the ones in those marks

2007-05-02 01:31:58 · answer #3 · answered by me 3 · 0⤊ 0⤋