Perform the indicated operation 7n6 14n110 20n3n6 8 A 4n6

Perform the indicated operation. (7n6 + 14n1-10)- -20n+3n6 -8) A. 4n6 + 17n4-18 OB. 36n10 OD.4n+34n4 D. 4n6 + 34n4-18 Click to select your answer

1) (7n^6 + 14n^4 - 10) - (-20n^4 + 3n^6 -8)

= 7n^6 + 14n^4 - 10 + 20n^4 - 3n^6 + 8

= 4n^6 +34n^4 -2

so option c is correct.

2) |5a+10| = |6a-6|

5a+10 = +(6a-6) or 5a+10 = -(6a-6)

5a+10 = 6a -6 or 5a+10 = -6a +6

-a = -16 or 11a = -4

a = 16 or a = -4/11

so solution set is {16,-11/4}