(-7x+5)²= Jawab beserta caranya

(-7x+5)^2
= (-7x)^2 + [(2)(-7x)(5)] + 5^2
= 49x^2 - 70x + 25

(-7x+5)²
= (-7x+5)×(-7x+5)
=-7x×-7x=49x²
=-7x×5=-35x

=5×-7x=-35x
=5×5=25

=49x²-35x-35x+25
=49x²-70x+25