Question

if a+b=2 ab=1 find a2-b2

Answer 1

hey guys hear is answer
a=1
b=1
a^2-b^2=0

Answer 2

${(a + b)}^{2} = {a}^{2} + {b}^{2} + 2ab \\ \\ \\ \: by \: substituting \: values \\ \\ \\ \\ {2}^{2} = {a}^{2} + {b}^{2} + 2 \times 1 \\ {a}^{2} + {b}^{2} = 4 - 2 \\ \\ \\ \\ {a}^{2} + {b}^{2} = 2$
Hope this helps you.