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Roots of Quadratic Equation

Find y when...

Question

Find $y$ when $x = 2$ when $y - x = 2$

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Solution

$y - x = 2$
putting x =2,
$y - 2 = 2$
adding 2 on both sides,
$y - 2 + 2 = 2 + 2$
y = 4

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