Oblicz. a) 5\sqrt{16}-2\sqrt{49} b) \frac{\sqrt{169}+\sqrt{121}}{\sqrt{36}-\sqrt{25}} c) \sqrt{0{,}25}+\sqrt{0{,}64}-\sq

Oblicz.

$a)$a) $5\sqrt{16}-2\sqrt{49}$5\sqrt{16}-2\sqrt{49}

$b)$b) $\frac{\sqrt{169}+\sqrt{121}}{\sqrt{36}-\sqrt{25}}$\frac{\sqrt{169}+\sqrt{121}}{\sqrt{36}-\sqrt{25}}

$c)$c) $\sqrt{0{,}25}+\sqrt{0{,}64}-\sqrt{0{,}09}$\sqrt{0{,}25}+\sqrt{0{,}64}-\sqrt{0{,}09}

$d)$d) $4\left(\sqrt{5}\right)^2-\sqrt{12^2}$4\left(\sqrt{5}\right)^2-\sqrt{12^2}

$e)$e) $\sqrt{\left(\sqrt{144}-\sqrt{64}\right)\cdot 9}-2$\sqrt{\left(\sqrt{144}-\sqrt{64}\right)\cdot 9}-2

$f)$f) $\sqrt{6+\sqrt{6+\sqrt{6+\sqrt{9}}}}$\sqrt{6+\sqrt{6+\sqrt{6+\sqrt{9}}}}