Answer:
x=7
Step-by-step explanation:
5x-10=25
+10 +10
5x=35
÷5 ÷5
7
Basically what you do is simple. First your -10 turns into positive 10 and you add 10 to 25. Which gives you 35. Then you have 5x. With 5x you simply divide 35 by 5 which gives you 7.
$38.40
to get your total you multiply
48 x 20% =9.60
then you subtract 48.00 - 9.60 = $38.40
17
(x² − 2x + 2) (x − 1)
Use grouping.
x³ − 3x² + 4x − 2
x³ − 3x² + 2x + 2x − 2
x (x² − 3x + 2) + 2 (x − 1)
x (x − 2) (x − 1) + 2 (x − 1)
(x (x − 2) + 2) (x − 1)
