2007-02-01 12:46:07 · 3 answers · asked by Dave 4 in Science & Mathematics ➔ Mathematics
1/2 * (2x+6)^2
or 1/2 * (2x+6^2)
depending on how you read the word statement.
2007-02-01 12:51:52 · answer #1 · answered by enginerd 6 · 0⤊ 0⤋
1. (1/2)(2x + 6^2)
First: Use PEMDAS --- ( ), exponents, multiplitcation, division, addition & subtraction.
(1/2)(2x+6*6)
(1/2)(2x+36)
Sec: eliminate parenthesis - distribute the outer term with the terms in parenthesis...
(1/2)(2x)+(1/2)(36)
(2x/2)+(36/2)
= x + 18
2. (1/2)[(2x+6)^2]
First: use PEMDAS...
(1/2)[(2x+6)(2x+6)]
(1/2)[(2x*2x)+(2x*6)+(6*2x)+(6*6)]
(1/2)(4x^2+12x+12x+36)
(1/2)(4x^2+24x+36)
Sec: distribute the outer term with terms in parenthesis...
(1/2)(4x^2)+(1/2)(24x)+(1/2)(36)
(4x^2/2)+(24x/2)+(36/2)
= 2x^2 + 12x + 18
2007-02-01 13:11:37 · answer #2 · answered by ♪♥Annie♥♪ 6 · 1⤊ 0⤋
0.5*(2x+6^2)
2007-02-01 12:51:00 · answer #3 · answered by cnt 2 · 0⤊ 0⤋