Answer Key 6.6

  1. [latex]\begin{array}[t]{ccc} (x)^2&-&(8)^2 \\ x^2&-&64 \end{array}[/latex]
  2. [latex]\begin{array}[t]{ccc} (a)^2&-&(4)^2 \\ a^2&-&16 \end{array}[/latex]
  3. [latex]\begin{array}[t]{ccc} (1)^2&-&(3p)^2 \\ 1&-&9p^2 \end{array}[/latex]
  4. [latex]\begin{array}[t]{ccc} (x)^2&-&(3)^2 \\ x^2&-&9 \end{array}[/latex]
  5. [latex]\begin{array}[t]{ccc} (1)^2&-&(7n)^2 \\ 1&-&49n^2 \end{array}[/latex]
  6. [latex]\begin{array}[t]{ccc} (8m)^2&-&(5)^2 \\ 64m^2&-&25 \end{array}[/latex]
  7. [latex]\begin{array}[t]{ccc} (4y)^2&-&(x)^2 \\ 16y^2&-&x^2 \end{array}[/latex]
  8. [latex]\begin{array}[t]{ccc} (7a)^2&-&(7b)^2 \\ 49a^2&-&49b^2 \end{array}[/latex]
  9. [latex]\begin{array}[t]{ccc} (4m)^2&-&(8n)^2 \\ 16m^2&-&64n^2 \end{array}[/latex]
  10. [latex]\begin{array}[t]{ccc} (3y)^2&-&(3x)^2 \\ 9y^2&-&9x^2 \end{array}[/latex]
  11. [latex]\begin{array}[t]{ccc} (6x)^2&-&(2y)^2 \\ 36x^2&-&4y^2 \end{array}[/latex]
  12. [latex]\begin{array}[t]{ccccc} (1)^2&+&2(1)(5n)&+&(5n)^2 \\ 1&+&10n&+&25n^2 \end{array}[/latex]
  13. [latex]a^2+10a+25[/latex]
  14. [latex]x^2-16x+64[/latex]
  15. [latex]1-12n+36n^2[/latex]
  16. [latex]16x^2-40x+25[/latex]
  17. [latex]25m^2-80m+64[/latex]
  18. [latex]9a^2+18ab+9b^2[/latex]
  19. [latex]25x^2+70xy+49y^2[/latex]
  20. [latex]16m^2-8mn+n^2[/latex]
  21. [latex]25+20r+4r^2[/latex]
  22. [latex]m^2-14m+49[/latex]
  23. [latex]16v^2-49[/latex]
  24. [latex]b^2-16[/latex]

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