The first few steps in deriving the quadratic formula are shown. a table listing the first few steps in deriving the quadratic formula which best explains why is not added to the left side of the equation in the last step shown in the table? the term startfraction b squared over 4 a squared endfraction is added to the right side of the equation, so it needs to be subtracted from the left side of the equation to balance the sides of the equation. the distributive property needs to be applied to determine the value to add to the left side of the equation to balance the sides of the equation. the term startfraction b squared over 4 a squared endfraction needs to be converted so it has a common denominator before adding it to the left side of the equation to balance the equation. the square root of the term needs to be found before adding the term to the left side of the equation to balance the sides of the equation.

let's cover over the formula of the vertex:

y = a(x – h)^2 + k

in this formula, (h,k) are the vertex, always remember that the positive or negative value of the vertex is based on the sign it has.

for example, if the vertex is -3,-6 then both the x and y value would have the positive sign attached to it and if it were a positive x and y value, then a negative sign would be attached to it.

with that being said, for our problem the x value is a positive one so we are looking for a number with a negative sign next to it, in this case the first and second choice.

however, for the first answer choice it isn't quite part of the formula so we know that the answer choice correctly displays the x value.

to confirm, we can see if the -1 fits correctly with the second answer choice, and as mentioned above a negative number will have a positive sign attached to it. so, for our problem we can see that -1 has been changed to +1, so we can confirm that the second answer choice is correct.

hence, our final answer is y=(x - 1)^2 + 1

answer is because 4×10=40

and 98×4= is 392

40,392

x coordinate is none

step-by-step explanation: