Question

Whichofthefollowingisaquadrateequation? (a) x(x+2)=x2 (b) x2+3x+2=0 (c) x2+ 1 x 2 =5 (d)
x+3=0​

Answer 1

Answer:

hzB

Step-by-step explanation:

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Answer 2

Answer:

Given x

2

−3x+2=0

x

2

−2x−1x+2=0 (Resolving the expression)

x(x−2)−1(x−2)=0 (Taking common factors)

(x−2)(x−1)=0 (Taking common factors)

∴x−2=0 or x−1=0 (Equating each factor to zero)

∴x=2 or x=1

∴2 and 1 are the roots of x

2

−3x+2=0