Solve each of the following equations. Number 1, d square x minus 2 dx dy minus d square y into z is equal to 0.
2$x^{2}$-8$y^{2}$
-1/2 + 1
$$\sum_{a}^{b}{$i^{8}$ }$$
5m-7n+3n-4m+2+2m-3mm-5
$(x+y)^{2}$ =4
10(-1)
how to get the number -12 with the number 4,7,8,2,5
x
-2x+4
