Evaluate the following using a suitable identity : (—x +y)2
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Step-by-step explanation:
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Step-by-step explanation:
Simplifying
X + y = 28
Solving
X + y = 28
Solving for variable 'X'.
Move all terms containing X to the left, all other terms to the right.
Add '-1y' to each side of the equation.
X + y + -1y = 28 + -1y
Combine like terms: y + -1y = 0
X + 0 = 28 + -1y
X = 28 + -1y
Simplifying
X = 28 + -1y
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