Respuesta :
It should have been written as:
(7-10x)^2 the ^2 means that the parenthetic term is squared, not multiplied by 2.
(7-10x)^2
100x^2-140x+49
That's the answer B.
(7-10x)^2 the ^2 means that the parenthetic term is squared, not multiplied by 2.
(7-10x)^2
100x^2-140x+49
That's the answer B.