Question

(X-3)^2÷2 -x+2÷5= x-4

Answer 1

(x -3)^2/ 2 -x + 2/5= x -4
x^2 -2.x.3 + 3^2/ 4 -x = x -4
x^2 -6x + 9= (4 -x). (x -4)
x^2 -6x + 9= 4x -16 -x^2 +4x
x^2 + x^2 -6x -4x -4x +9 + 16= 0
2x^2 -14x +25= 0

a= 2
b= -14
c= 25

Delta= b^2 -4.a.c
Delta= (-14)^2 -4.2.25
Delta= 196 -8 . 25
Delta= 196 -200
Delta= -4 <0

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