Math, asked by aditya000007, 11 months ago

please help me in this question

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Answers

Answered by gunugarg

1

Answer:

a²+b²+2abcos=a²+b²-2abcos

Step-by-step explanation:

√(20)²+(5)²+20*5*0 =20²+5²-2*5*20*0

√400+25=√400+25

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