Question

$if \: {a}^{2} + {b}^{2} = 65 \: and \: ab = 8. \: find \: the \: value \: of \: {a}^{2} - {b}^{2}$
find the value???​

Answer 1

Step-by-step explanation:

${(a - b)}^{2} = {a}^{2} + {b}^{2} - 2ab \\ \\ = > {(a - b)}^{2} = 65 - 2 \times 16 \\ \\ = > {(a - b)}^{2} = 65 - 32 = 33$