10 Bài tập Rút gọn biểu thức (có lời giải)

$1968+880\sqrt{5}$;

$1973+888\sqrt{5}$;

$1968+888\sqrt{5}$;

$1973+880\sqrt{5}$.

$372+176\sqrt{5}$;

$376+168\sqrt{5}$;

$372+168\sqrt{5}$;

$376+176\sqrt{5}$.

$472-236\sqrt{2}$;

$452-236\sqrt{2}$;

$472-288\sqrt{2}$;

$452-288\sqrt{2}$.

$2336-1604\sqrt{2}$;

$2384-1608\sqrt{2}$;

$2336-1608\sqrt{2}$;

$2384-1604\sqrt{2}$.

$\frac{9449}{4}+1140\sqrt{2}$;

$\frac{9499}{4}+1144\sqrt{2}$;

$\frac{9449}{4}+1144\sqrt{2}$;

$\frac{9499}{4}+1140\sqrt{2}$.

$14149-\frac{68525\sqrt{2}}{8}$;

$12149-\frac{68525\sqrt{2}}{8}$;

$14149-\frac{68725\sqrt{2}}{8}$;

$12149-\frac{68725\sqrt{2}}{8}$.

$645+156\sqrt{2}$;

$640+153\sqrt{2}$;

$645+153\sqrt{2}$;

$640+156\sqrt{2}$.

$3225+1016\sqrt{2}$;

$3227+1016\sqrt{2}$;

$3225+1015\sqrt{2}$;

$3227+1015\sqrt{2}$.

−4;

−3;

−2;

−1.

18;

20;

22;

24.