4 years ago

Please help asap !!!!!!!!!

Mathematics

1 answer:

scoray [572]4 years ago

7 0

Answer:

D. 6\sqrt{5}-4\sqrt{7}

Step-by-step explanation:

$3\sqrt{5}-2\sqrt{7}+\sqrt{45}-\sqrt{28} \\3\sqrt{5}-2\sqrt{7}+\sqrt{9*5}-\sqrt{4*7}\\3\sqrt{5}-2\sqrt{7} +3\sqrt{5}-2\sqrt{7}\\ 6\sqrt{5}-4\sqrt{7}$

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