Question

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Answer 1

E(x)=(x²+2x+1-4)/x × x²/(x²-x)

E(x)=(x^4+2x³-3x²)/(x³-x²)

E(x)=[x²(x²+2x-3)]/[x²(x-1)]

E(x)=(x²+2x-3)/(x-1)

Δ=b²-4ac=4+12=16

x1=(-b+√Δ)/2a=(-2+4)/2=2/2=1

x2=(-2-4)/2= -6/2= -3

E(x)=[(x-1)(x+3)]/(x-1)

E(x)=x+3