Question

descubra o x dessa equação

√10+√5x-9 = 4

me ajudem, preciso para hoje, é super importante

Answer 1

$\sqrt{10+ \sqrt{5x-9}}=4\\\\ (\sqrt{10+ \sqrt{5x-9}})^2=4^2\\\\10+ \sqrt{5x-9}=16\\\\\sqrt{5x-9}=16-10\\\\\sqrt{5x-9}=6\\\\(\sqrt{5x-9})^2=6^2\\\\5x-9=36\\\\5x=36+9\\\\5x=45\\\\x=\frac{45}{5}\\\\x=9$