rearrange the equation to where you set it equal to 0 by moving the 25 over.
n2 - 8n -9 = 0
now factor
(n-9)(n+1)
so n1 = 9
n2 = -1
Answer:
his father weighs 28 kg more :)
What’s the rest of the question
Answer:
24
Step-by-step explanation:
PEMDAS: 15-14+23
1+23
24