Question

If a=1 , b=2 , c=3 and d=4 , then what is ab + bc + cd by a2 + b2 + c2 ?​

Answer 1

Answer:

Step-by-step explanation:

1+2+2+3+3+4+1+2+2+2+3+2 So the answer is 27

Hope it helps you

Answer 2

Answer:

the answer is 16

Step-by-step explanation:

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