Identify which of the following equations are quadratic and which are not. If the equation is not, explain. With solutions. :)
1. 3m+8=15
2. x^2-5x+10=0
3. 12-4x=0
4. 2t^2-7t=12
5. 6-2x+3x^2=0
6. 25-r^2=4r
7. 3x(x-2)=-7
8. 1/2(h-6)=0
9. (x-2)^2=0
10. (w-8) (w+5)=14

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