6. 25 - R\Xb2 = 4r, 7. 3x(X - 2) =-7, 8.\Xbd (H-6)=0, 9. (X + 2)\Xb2 = 0, 0. (W 2013 8)(W + 5) = 14

6. 25 - r² = 4r
7. 3x(x - 2) =-7
8.½ (h-6)=0
9. (x + 2)² = 0
0. (w – 8)(w + 5) = 14

 

Answer and Step-by-step explanation:

6. 25 - r² = 4r

−r²−4r+25=0

Quadratic

7. 3x(x - 2) =-7

3x²−6x+7=0

Quadratic

8.½ (h-6)=0

1/2h-3=0

The degree of the equation is 1 so its not a quadratic equation.

9. (x + 2)² = 0

x²+4x+4=0

Quadratic

10. (w – 8)(w + 5) = 14

w²−3w−54=0

Quadratic

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