It is: 21a exponent 6
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7a minus 2, if "3a-2" means 3a minus 2. 3a plus 1 and 1-3rd in parenthesis times 3a, if "3a-2" means 3a squared. a plus 3a squared plus 3a = 1-3rd times 3a plus 3a times 3a plus 1 times 3a = 3a plus 1 and 1-3rd in parenthesis times 3a
4a - 5 = 7a - 7 -5 = 3a - 7 2 = 3a a = 3/2
The answer to the expression 25a^5 + 15a^4 - 35a^3 - 40a^3 + 10a divided by 5a is 5a^4 + 3a^3 - 7a^2 - 8a + 2.
4a-2=7a-6 4=3a a=4/3
4a+3a-4 = 10 4a+3a = 10+4 7a = 14 a = 2