Question

$(3 \times + 6y) ^{2}$


$(7a \times + 4b) ^{2}$
ayuda xfavor​

Answer 1

Respuesta:

(3x+6y)²

=(3x+6y)(3x+6y)

=9x²+18xy+18xy+36y²

=9x²+36xy+36y²

(7ay+4b)²

=(7ax+4b)(7ay+4b)

=49a²x²+28aby+28aby +16b²

=49a²x²+56abx+16b²