Use FOIL to simplify the expression $" "(2x+3)(x-1) ?$

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Answer 1 · 2018-02-09T14:39:50

$2x^2 + x -3$

$F " "$ Firsts
$O" "$ Outers
$I" "$ Inners
$L" "$ Lasts

1) Do $2x times x = 2x^2$
2) Do $2x times -1 = -2x$
3) Do $3 times x = 3x$
4) Do $3 times -1 = -3$

5) Put all of the terms in order.
$2x^2 -2x +3x -3$

6) Add or subtract like terms
$2x^2 + x -3$

Answer 2 · 2018-02-23T17:48:30

For reference. This is the same sort of thing as FOIL

$color(blue)((2x+3))color(green)((x-1))$

Multiply everything in the right hand brackets by everything in the left.

$color(green)(color(blue)(2x)(x-1)color(blue)(color(white)(dd"d")+3)(x-1))" "$ Notice the way the + follows the 3

$2x^2-2xcolor(white)("ddd")+3x-3$

$2x^2+x-3$

Use FOIL to simplify the expression " "(2x+3)(x-1) ?" "(2x+3)(x-1) ?