What should be added to x^2 + 2y^2z^2 to get 5x^2-4y^2+3z^2 :-
O (a) 4x2 + 6y2– 4z2
O (b) 4x2 – 6y2 + 4z2
O (c) – 4x2 + 6y2 + 4z2
O (d) 4x2 + 6y2 + 4z2
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what is the sign between 2y²and2z²?
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