$$4 \times \sqrt{ 49 } -2 \times \sqrt{ 64 } \div 1 \times \sqrt{ 81 } =$$
$-116$
$$4\times 7-\frac{2\sqrt{64}}{1}\sqrt{81}$$
$$28-\frac{2\sqrt{64}}{1}\sqrt{81}$$
$$28-\frac{2\times 8}{1}\sqrt{81}$$
$$28-\frac{16}{1}\sqrt{81}$$
$$28-16\sqrt{81}$$
$$28-16\times 9$$
$$28-144$$
$$-116$$
Show Solution
Hide Solution
