1. square of binomial ( x + y )² =
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Answer:
[tex]x^2+2xy+y^2[/tex]
Step-by-step explanation:
Use the foil method
F - [tex](x)(x)=x^2[/tex]
OI - [tex](xy)+(xy)=2xy[/tex]
L -[tex](y)(y)=y^2[/tex]