Question

Which equation is equivalent to startroot x^2 + 81 EndRoot = x + 10?

Answer 1

Answer:given below

Step-by-step explanation:

sqrt x^2 +81= x + 10

x^2 + 81 = (x+10)^2

x^2 + 81 = x^2 + 20x + 100

so answer is:  

x^2 + 81 = x^2 +20x + 100

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