Answer:
what?
Step-by-step explanation:
Answer:
2
Step-by-step explanation:
8=
Answer:
<u>13 - 2x </u>
Step-by-step explanation:
(x +2)² + (x - 3)² - 2x²
<em>Expand.</em>
(x + 2)(x + 2) + (x - 3)(x - 3) - 2x²
x² + 2x + 2x + 4 + x² - 3x - 3x + 9 - 2x²
<em>Bring all the like terms together then simply.</em>
x² + x² - 2x² + 2x + 2x - 3x - 3x + 4 + 9
2x² - 2x² + 4x - 6x + 13
= <u>13 - 2x</u> (or <u>-2x + 13</u> )
Answer:
The answer is 16
Step-by-step explanation:
You substitute 3 in for x.
Answer:
6 months
Step-by-step explanation:
12x = 87
12x ÷ 12 = x
87 - 15 = 72
72 ÷ 12 = 6
x = 6 months
CHECK:
12 x 6 = 72 + 15 = 87
87 = 87
, 22.7