Question 253891
how would i factor (x + 2y) squared - 3(x+2y) +2 
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You have a quadratic with x+2y being the variable.
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Let x+2y = w
Substitute to get:
w^2 - 3w + 2
(w-2)(w-1)
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Substitute back to get the final factored form:
(x+2y-2)(x+2y-1)
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Cheers,
Stan H.