Question

cuadrados (2x+3y+ z)elevado ala 2 por fa ayudenme

Answer 1

$(2x+3y+ z) ^{2}$

$(2x) ^{2} +(3y) ^{2} + z^{2} + 2( 2x)(3y) +2(2x)(z) +2(3y)(z)$

$4x ^{2} +9y^{2} + z^{2} + 12xy +4xz +6yz$