Mathematics: Write the expression as a polynomial (x+1)(x+2)(y–3)

Write the expression as a polynomial (x+1)(x+2)(y–3)

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angellv917

10.03.2022

$\text{Use FOIL method:}\ (a+b)(c+d)=ac+ad+bc+bd\\\\(x+1)(x+2)(y-3)=[(x)(x)+(x)(2)+(1)(x)+(1)(2)](y-3)\\\\=(x^2+2x+x+2)(y-3)=(x^2+3x+2)(y-3)\\\\=(x^2)(y)+(x^2)(-3)+(3x)(y)+(3x)(-3)+(2)(y)+(2)(-3)\\\\=\boxed{x^2y-3x^2+3xy-9x+2y-6}$

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hrcatena

11.08.2020

Mathematics

4x5+9 does not belong with the other three.

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Write the expression as a polynomial (x+1)(x+2)(y–3)

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