I think it is -5,-4,-1/4, 1.75, 6.2, 9, 18 1/2, 21
Answer:
3.6+52.3= 55.9
Step-by-step explanation:
Answer:
n = -7,6
Step-by-step explanation:
n(n+1)+3=45
distributive property: a(b+c) = ab+ac
n²+n+3 = 45
n²+n -42 = 0
factor now
(n+7)(n-6) = 0
n = -7,6