Question

a) x.(x+y)=
b)y.(1+y)=
$c) a.(a {}^{2} + 1) =$
d) ( k+b+1).k=
e) ( x+1 ) . ( x +2 )=
f) (x+y).(x+y)=




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Answer 1

Resposta:

$a)x.(x + y) = x ^{2} + xy \\ b)y.(1 + y) = y + y ^{2} \\ c)a(a ^{2} + 1) = a ^{3} + a \\ d)(k + b + 1).k = k ^{2} + k b + k \\ e)( x + 1)(x + 2) = x ^{2} + 3x + 2 \\ f)(x + y)(x + y) = x ^{2} + 2xy + y ^{2}$