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Urgenttt!!Rezolvati in R ecuatia:ex.6(d,e,f)

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UrgentttRezolvati In R Ecuatiaex6def class=

Răspuns :

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Vezi imaginea CRISANEMANUEL
Vezi imaginea CRISANEMANUEL
2(X-1)^2= 3X+2
2(X^2 -2X + 1)= 3X+2
2X^2-4X+2=3X+2
2X^2-7X=0
X(2X-7)=0
1) X=0
2) 2X-7=0
X= 7/2

(X-2)(X+3) =24
X^2+3X-2X-6=24
X^2 +X-30=0
delta= 1^2+ 4×30=121 >0 => X1,X2= (-1+-11)/2
X1= -12/2=-6
X2= 10/2=5

(X-3)(X+2)=14
X^2-X-6-14=0
X^2-X-20=0
delta=1^2- 4×(-20)= 1+80=81>0 =>
=> X1,X2= (1+-9)/2
X1= -8/2=-4
X2=10/2=5