CUET Preparation Today
Simplify the expression ((82×82) − (18×18))0.5 |
100 20 40 80 |
80 |
((82×82) − (18×18))0.5 We know that, a2 - b2 = (a + b) (a – b) = \(\sqrt {(82 ×82)(18×18)}\) = \(\sqrt {(82+18)(82-18)}\) = \(\sqrt {(100)(64)}\) = \(\sqrt {6400}\) = 80 |
