Answer:
c = 1
Step-by-step explanation:
Given
x² + 2x + c
To complete the square
add ( half the coefficient of the x- term )² to x² + 2x
x² + 2(1)x + 1
= (x + 1)²
Thus
x² + 2x + 1 = (x + 1)² ← a perfect square
with c = 1
Three boxes, if you divide 23.55 by 7.85 you get the total of 3
Answer:
Sure!
Step-by-step explanation:
<span>So you want to factor this polynom thus it will look like something like this
(x+a)(x+b) where a and b can be positive or negative
now in our question the polynom ends with +35 that has no x in it. This part can only come from a*b. Two numbers multiplied can only be positive if they are both positive or if they are both negative.
</span><span>-26x this part comes from ax+bx part of the above equation. If both a and b are poitive than the result needs to be positive as well, this combining the two arguements we come to the conclusion that they are both negative.
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