Answer :

nobillionaireNobley
[tex]10x^2+20x=0\\10x(x+2)=0\\10x=0 \ or \ x+2=0\\x=0 \ or \ x = -2 \\ \\ \\ 5x^2+50x+120=0\\5(x^2+10x+24)=0\\x^2+10x+24=0\\x^2+4x+6x+24=0\\x(x+4)+6(x+4)=0\\(x+6)(x+4)=0\\x+6=0 \ or \ x+4=0\\x=-6 \ or \ x = -4[/tex]

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