(-7x+2y)^2 = (-7x+2y)(-7x+2y)Expanding using the FOIL method:= (-7x)(-7x) + (-7x)(2y) + (2y)(-7x) + (2y)(2y)= 49x^2 - 14xy - 14xy + 4y^2= 49x^2 - 28xy + 4y^2
Therefore, (-7x+2y)^2 = 49x^2 - 28xy + 4y^2.
(-7x+2y)^2 = (-7x+2y)(-7x+2y)
Expanding using the FOIL method:
= (-7x)(-7x) + (-7x)(2y) + (2y)(-7x) + (2y)(2y)
= 49x^2 - 14xy - 14xy + 4y^2
= 49x^2 - 28xy + 4y^2
Therefore, (-7x+2y)^2 = 49x^2 - 28xy + 4y^2.