Question

(x-3)(x+3)-4x=(x-1)²-5
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Answer 1

(x-3)(x+3)=(x2-9)
(x-1)2=x2-1
x2-9-4x=x2-1-5=
=x2-x2-4x=9-1-5=
=. -4x=3
-x=0.75
x=-0.75