Question

Simplify (if needed) and find the value of the following expression when x 2 and y* - 3
(a) 2(x - xy + y ) + (x - 1)
(b) x+y + 3x (x2+y2

Answer 1

Answer:

(a)

Step-by-step explanation:

2(2- (2x -3) + (-3) + (2-1)

2(2+6) -3+1

2(8) -3+1

16 -3 +1

17 -3

14

So, the answer is 14

b)

2+ (-3) + 3(2) [(2)²+(-3)²]

2-3 +6 ( 4+9)

-1 +6 (13)

-1 +78

+ 77

So, the answer is +77