Question

Write the factors of y^2+2y+1

Answer 1

$y {}^{2} + 2y + 1$

$y {}^{2} + y + y + 1$

$y(y + 1) + 1(y + 1)$

$(y + 1)(y + 1)$

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Answer 2

y^2 + 2y + 1 =0

y^2 + y + y + 1 = 0

y ( y + 1 ) + 1 ( y + 1 ) = 0

y = -1

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