• Forma 1:
[tex]x\²-8x+7=0[/tex]
[tex]x\²-7x-x+7=0[/tex]
[tex]x(x-7)-(x-7)=0[/tex]
[tex](x-1)(x-7)=0[/tex]
• Forma 2:
[tex]x\²-8x+16-9=0[/tex]
[tex](x-4)\²-3\²=0[/tex]
[tex](x-4+3)(x-4-3)=0[/tex]
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Verified answer
• Forma 1:
[tex]x\²-8x+7=0[/tex]
[tex]x\²-7x-x+7=0[/tex]
[tex]x(x-7)-(x-7)=0[/tex]
[tex](x-1)(x-7)=0[/tex]
• Forma 2:
[tex]x\²-8x+7=0[/tex]
[tex]x\²-8x+16-9=0[/tex]
[tex](x-4)\²-3\²=0[/tex]
[tex](x-4+3)(x-4-3)=0[/tex]
[tex](x-1)(x-7)=0[/tex]