What are the steps to do so? I forgot how to do these types of problems.
2006-09-10 09:34:50 · 4 answers · asked by Internut 1 in Education & Reference ➔ Other - Education
|x + 2| means the absolute value of the quantity x + 2, NOT the quantity of x + 2 in parenthesis, (x + 2).
2006-09-10 09:57:14 · update #1
you go 2 times X ( which equals 2 ) plus 7
so 2 * 2 + 7 = 11
2006-09-10 09:37:26 · answer #1 · answered by Anonymous · 0⤊ 1⤋
I don't mich like the first response. I would break the thing up into two parts:
x + 2 <= 2x + 7; -x - 2 <= 2x + 7, address each part independently, and see what happens. In this case:
0 <= x + 5, or x >= -5; 0 <= 3x + 9, or x >= -3. We can test with x = -4 to see which one(s) work:
|-4 + 2| <= -8 + 7; 2 <= -1, which is wrong, so we need x >= -3.
2006-09-10 16:44:37 · answer #2 · answered by Anonymous · 0⤊ 1⤋
(x+2)^2 = 2x+7
x^2+4x+4 = 2x+7
x^2+2x-3 = 0
(x+3) (x-1) = 0
x = 3 or x = (-1)
since x can't be negative b/c <=
x = 3
2006-09-10 16:39:35 · answer #3 · answered by Trans Atlantic 2 · 0⤊ 1⤋
(x+2)<=2x+7
-x -x
2<=x+7
-7 -7
-5<=x
good luck!!!
2006-09-10 16:48:26 · answer #4 · answered by drcarson 1 · 0⤊ 0⤋