Pls help and give an explanation of how to work it out, Thnx!!

Hello Kaydie! Assuming you're trying to factor this, the correct answer is .

Step-by-step explanation:

Since 800 and 600 both can't be taken perfect squares, that means taking out the greatest common factor is the best way to start. 200 is the greatest common factor of all three terms, so take 200 out and write it as 200 multiplying the terms in a parenthesis, which would be . Since cannot be simplified any further, that means your answer should be . Be sure to tell me if factoring the expression was not what the question asked for, and I'll edit my answer. Have a good day!

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step-by-step explanation:

i think it would be 42cm