Question

(a-b)2-c2 quando a=2/3 b=1 e c=-1

Answer 1

$(a - b) {}^{2} - c {}^{2} \\ ( \frac{2}{3} - 1) {}^{2} - ( - 1) {}^{2} \\ ( \frac{2 - 3}{3} ) {}^{2} - ( - 1) {}^{2} \\ ( - \frac{1}{3} ) {}^{2} - ( - 1) {}^{2} \\ \frac{1}{9} - 1 \\ \frac{1 - 9}{9} \\ \boxed{\boxed{\boxed{ - \frac{8}{9} }}}$

atte. yrz