x=5+√5 find 10x+7x²+x³
plz show the working
Answers
Answered by
1
Answer:
905 + 80√15
Step-by-step explanation:
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Answered by
1
Answer:
20(23+8√5) is the answer.
Step-by-step explanation:
50+10√5+175+35+70√5+125+5√5+75√5+75
=460+160√5
=20(23+8√5)
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