If a + b = 10 what is the value of 2(a + b) + a + b/6 + (a + b) ^ 2 - 2

The answer is -5b-768 over 6

Step-by-step explanation: subtract b from both sides

replace variable a with 10-b in the expression

remove parentheses

combine the opposite terms

simplify

table 3 represents a direct variation function. : )

let x and 400 - x be the two numbers.  

==> 0.80x + 0.85(400 - x) = 400 - 68 from the statement of the problem.  

< ==> 0.80x + 0.85(400 - x) = 400 - 68  

==> 340 - 0.05x = 332  

< ==> -0.05x = -8 ==> x = 160, the first number ==> 400 - x = 240, the second number.