[tex][{(5 \times {2}^{5} \div 10 + {3}^{2})}^{7} \div {5}^{10} - {20}^{2} ] \div {3}^{2} [/tex]
[tex] = [ {(1 \times {2}^{5} \div 2 + 9)}^{7} \div {5}^{10} - 400] \div 9[/tex]
[tex] = [ {( {2}^{5} \div 2 + 9) }^{7} \div {5}^{10} - 400] \div 9[/tex]
[tex] = [ {( {2}^{5 - 1} + 9) }^{7} \div {5}^{10} - 400 ] \div 9[/tex]
[tex] = [ {( {2}^{4} + 9) }^{7} \div {5}^{10} - 400] \div 9[/tex]
[tex] = [ {(16 + 9)}^{7} \div {5}^{10} - 400 ] \div 9[/tex]
[tex] = ( {25}^{7} \div {5}^{10} - 400) \div 9[/tex]
[tex] = [ { {(5}^{2} )}^{7} \div {5}^{10} - 400 ] \div 9[/tex]
[tex] = ( {5}^{2 \times 7} \div {5}^{10} - 400) \div 9[/tex]
[tex] = ( {5}^{14} \div {5}^{10} - 400) \div 9[/tex]
[tex] = ( {5}^{14 - 10} - 400) \div 9[/tex]
[tex] = ( {5}^{4} - 400) \div 9[/tex]
[tex] = (625 - 400) \div 9[/tex]
[tex] = 225 \div 9[/tex]
[tex] = 25[/tex]
[tex] = 5 \times 5[/tex]
[tex] = {5}^{2} = > p.p[/tex]
