Question

L square + 1 square whole square minus 8 square minus 7 square whole square

Answer 1

well if translating what you said, you mean
$\bigl[(l^2+1^2)^2-8^2-7^2)\bigl]^2$
$\implies \bigl[(l+1)^2-2l-64-49)\bigl]^2 [ \because a^2+b^2= (a+b)^2 - 2ab]$
[tex] \implies \bigl[(l+1)^2-2l-113)\bigl]^2 \implies \bigl[l^2 +1 -2l-113 \bigl] \implies \bigl[l^2-2l-112 \bigl][/tex]
$\therefore l= 1+ \sqrt{113} , 1- \sqrt{113}$

please give it the brainliest answer! it took me 20 minutes to write