Answer:
x=-21
Step-by-step explanation:
x-7=2x+14
-7=x+14
-21=x
(2/3)x = 10
(3/2)(2/3)x = 10(3/2)
x = 30/2 = 15
Answer:
True if im not mistaken
Step-by-step explanation:
Answer:
P(x) = -5(x² - 12)² + 405
Step-by-step explanation:
P(x) = -5x² + 120x - 315
Factor out -5 from the first two terms
P(x) = -5(x² - 24x) - 315
Complete the square
P(x) = -5(x - 12)² - (-5(-12)²) -315
P(x) = -5(x - 12)² + 720 - 315
P(x) = -5(x - 12)² + 405
