Identify the quadratic equation in the following. Write Q if the equation is quadratic and N
if it is not.
Example: 5x= 10 answer: N
30x2+2x=0 answer: Q
1. 2x-9=0
6. x2=9
2. 2x2 – x=6
7. x2 +4x -7=0
3. 2(x+4)=0
8. (x+3)(x-2) = 2
4. 2x (x-3) = 8
9. x2 +10x=4
5. x3 +3x+4=0
10. 4x+x²+8=0
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if it is not.
Example: 5x= 10 answer: N
30x2+2x=0 answer: Q
1. 2x-9=0
6. x2=9
2. 2x2 – x=6
7. x2 +4x -7=0
3. 2(x+4)=0
8. (x+3)(x-2) = 2
4. 2x (x-3) = 8
9. x2 +10x=4
5. x3 +3x+4=0
10. 4x+x²+8=0
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Answer:
1.)N
2.)Q
3.)N
4.)Q
5.)N
6.)Q
7.)Q
8.)Q
9.)Q
10.)Q