exam
Maths Puzzle
Numerical Ability
i didnt know where to ask this question it is for college algebra: solve the system {3x -y+2z=15
x+2y+3z=5
-2x+y-3z=-16
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exam Other Question
find (a)f o g (b)g o f .find the domain of each function and each composite funcition.
Given: f(x)= x^2 +1 g(x)=square root of x
i can find f(g) and g(f) but i cant find the domains
-9x + 7 +4x = -5x +7