x2 + y2 = x2 - 2xy + y2 + 2xy = (x - y)2 + 2xy = 72 + 2*8 = 49 + 16 = 65
You could, instead, solve the two equations for x and y and substitute, but the above method is simpler.
That depends what either the value of a or the value of b is.
9
n equals 52
p=3 !
24
That depends what either the value of a or the value of b is.
9
x=-11
It is 34.
n equals 52
p=3 !
24
-186/5
There is no numerical value for 'x' that can make this a true statement.
29
100 equales
If a + b = 6, what is the value of 3a + 3b?