Question

упростите выражение a^2+(3a-b)^2

Answer 1

a^2+(3a-b)^2=a^2+9a^2-6ab+b^2=10a^2-6ab+b^2

Answer 2

$a^2+(3a-b)^2=a^2+9a^2-6ab+b^2=10a^2-6ab+b^2$