# 1. Write any two quadratic equations. 2. Decide which of the following are quadratic equations. (1) $x^{2}+5 x-2=0$ (2) $y^{2}=5 y-10$ (3) $y^{2}+\frac{1}{y}=2$ (4) $x+\frac{1}{x}=-2$ (5) $(m+2)(m-5)=0$ (6) $m^{3}+3 m^{2}-2=3 m^{3}$

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1. Write any two quadratic equations. 2. Decide which of the following are quadratic equations. (1) $x^{2}+5 x-2=0$ (2) $y^{2}=5 y-10$ (3) $y^{2}+\frac{1}{y}=2$ (4) $x+\frac{1}{x}=-2$ (5) $(m+2)(m-5)=0$ (6) $m^{3}+3 m^{2}-2=3 m^{3}$
by (40 points)
Good

by (20 points)

1. quadratic equations should be of format ax2+bx+c=0 in similar manner,

3x2-2x+6=0  and 4x2+5x-10=0

2. 1) satisfies the general equation hence it is quadratic

2) satisfies

3) doesn't satisfies

you can find other on your own basis