1. Check whether the following are quadratic equations:
(i) (x+1)=2(x-3)
(ii) - 2r=(-2)(3-0)
(ii) (x-2)(x+1)=(1-1)(+3)
(iv) (6-3)(2x+1)= x(x + 5)
(v) (2x - 1)(x-3) = (x + 5)(x - 1) (vi) 2+ 3+1 = ( - 2)
(vii) (x+2) = 2x (r2 - 1)
(viil).-4r-x+1=(x - 2)
Answers
Answered by
1
Answer:
- (x+1) = 2(x-3)
- (x+1) = 2x-3
- x+1 = 2x-3
- 1+3= 2x+x
- 4= 3x
- 4/3=x
Answered by
1
Answer:
(i)x+1=2x-6
3x=7
not a quadratic equation
(ii)-2r=-6
r=3
not a quadratic equation
(iii)x2-x-2=0
quadratic equation
(iv)6x+3=x2+5x
x2-x-3=0
quadratic equation
(v)2x2-6x-x+3=x2-x+5x-5
x2-11x+8=0
quadratic equation
(vi)6=-2
not a quadratic equation
(vii)x+2=4xr-2x
3x-4xr+2=0
not a quadratic equation
(viii)2x+4r-3=0
not a quadratic equation
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