Question
if y^{2} + 1 = 2(x - y), what is 2x in terms of y

kl

Step-by-step explanation:

2x = y² + 2y + 1

Step-by-step explanation:

Given

y² + 1 = 2(x - y) ← distribute parenthesis

y² + 1 = 2x - 2y ( add 2y to both sides )

y² + 2y + 1 = 2x

b

step-by-step explanation:

a difference is the result of subtraction. while each of these expressions has subtraction in it, a difference will be the result when subtraction is the last operation applied in the order of operations for the expression. this means subtraction must be outside of the parenthesis. only b has this.

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