bmajenty
52

Simplify 3 square root of 5 end root minus 2 square root of 7 end root plus square root of 45 end root minus square root of 28

Hello, $3 \sqrt{5} -2 \sqrt{7} + \sqrt{45} - \sqrt{28}\\\\ = 3 \sqrt{5} -2 \sqrt{7} + 3\sqrt{5} - 2\sqrt{7}\\\\ =6 \sqrt{5} -4 \sqrt{7}$