Wyrażenie 25-4x^2+12xy-9y^2=0 w postaci iloczynowej ma postać jaką?:)
(5-2x)(5+2x)+y(12x-9y)=0
25-(4x^2-12xy+9y^2)=0
25-(2x-3y)^2=0
(5^2-2x+3y)(5^2+2x-3y)=0
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(5-2x)(5+2x)+y(12x-9y)=0
25-(4x^2-12xy+9y^2)=0
25-(2x-3y)^2=0
(5^2-2x+3y)(5^2+2x-3y)=0