n= -2
-4n3 + 8n2 - 4n + 7
12+4n = 2n12+4n-4n = 2n-4n12 = -2n-1/2(12 = -2n)-6 = n
4n + 3 = 19Subtract 3 from each side:4n = 16Divide each side by 4:n = 4
7n + 2 = 4n + 17Subtract 2 from each side:7n = 4n + 15Subtract 4n from each side:3n = 15Divide each side by 3:n = 5
n= -2
-4n3 + 8n2 - 4n + 7
12+4n = 2n12+4n-4n = 2n-4n12 = -2n-1/2(12 = -2n)-6 = n
4n + 3 = 19Subtract 3 from each side:4n = 16Divide each side by 4:n = 4
7n + 2 = 4n + 17Subtract 2 from each side:7n = 4n + 15Subtract 4n from each side:3n = 15Divide each side by 3:n = 5
As follows:- 4n+13 = n-8 4n-n = -8-13 3n = -21 n = -7
4n + 5
8n-2+4n = 66-5n 8n+4n+5n = 66+2 17n = 68 n = 4
4n/7 + 8 = 20 subtract 8 from each side: 4n/7 = 12 multiply each side by 7: 4n = 84 n = 21
3n + 2n = 7 + 4n 5n = 7 + 4n 5n - 4n = 7 n = 7
it equals -4n
y