please give me correct answer
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Answer:
-3root2 + 7root3 - 2root7
Step-by-step explanation:
2 × root2 + 5 × root3 - root7 + 2 × root3 - 5 × root2 - root7
= 2 × root2 - 5 × root2 + 5 × root3 + 2 × root3 - root7 - root7
= -3 × root2 + 7 × root3 - 2 × root7
= -3root2 + 7root3 - 2root7
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