50-38=12
38+12=50
The answer is 12
Can write 3x or 3(x) or 3•x
+the larger one is double the size since 6.2 x 2 - 12.4
so 1.8 x 2 = 3.6
perimeter = 2 x 3.6 + 2 x 12.4 = 32 feet
Y=|x| +3
Y=-|x+2| -1
Y=3|x-4| - 5
Answer:
-4x^2 – 2xy + 2y^2 + 9
Step-by-step explanation:
First, perform the indicated multiplications: Multiply each 7x^2, -3xy and -3^2 by -1:
If this is done properly, we get: -7x^2 + 3xy + 9
Now rewrite (3x^2 – 5xy + 2y^2)-(7x^2 – 3xy - 3^2) as
3x^2 – 5xy + 2y^2 - 7x^2 + 3xy + 9)
Combining the x^2 terms, we get:
-4x^2 – 5xy + 2y^2 + 3xy + 9.
Combining the xy terms, we get:
-4x^2 – 2xy + 2y^2 + 9
This is the final answer (sum), since none of these four terms can be combined.
