Which equation is the standard form of −56x+14x^2=−51?

Question

14x^2−56x+51=0
14x^2+51−56x=0
−56x+14x^2−51=0
14x^2−56x−51=0

I do believe it is A or D, is one of these correct?

Answer 1

−56x+14x^2=−51
add 51 to both sides
−56x+14x^2+ 51= 0
fix the order
14 x^2 - 56 x + 51 = 0

Answer 2

thank you so much!!!

Answer 3

I need help!
14x^2 + 56x + 21
how can I solve this using the distributive property getting the answer
7(2x2 + 8x + 3)?