book Maths Puzzle Numerical Ability

how do you answer an equation in an ordered pair?

5x+5y=0
3x+y=-10

Read Solution (Total 0)

book Other Question

X+Y

O (3-2i)+(3+2i)=6

Does O mean to put (3-2i)put into (3+2i)? Simplify square root of (x^2+4).

thanks, Kyle