Answer:
–9(3x³ – 8x + 9)
Step-by-step explanation:
–27x³ + 72x – 81
The above equation can be factorised as follow:
–27x³ = –3 * 3 * 3 * x * x * x
72x = 2 * 2 * 2 * 3 * 3 * x
–81 = –3 * 3 * 3 * 3
Common factor = 3 * 3
Greatest common factor = 9
Thus,
–27x³ + 72x – 81 = 9(–3x³ + 8x – 9)
–27x³ + 72x – 81 = –9(3x³ – 8x + 9)
7 : 5 = 7x : 5x
7x + 5x = 12x
12x = 48 ⇒ x = 48:12 = 4
7x = 7 · 4 = 28
5x = 5 · 4 = 20
Answer: 28 : 20
I think the answer is y= 4x-2
Answer:
9k=18
k=9
Step-by-step explanation: