Answer:
C
Step-by-step explanation:
Given
f(x) = x² + x + 1
To express in vertex form use the method of completing the square
add/subtract ( half the coefficient of the x- term)² to x² + x
x² + 2()x +
-
+ 1
= (x + )² +
→ C
If ABC congruent to DEC . if ABC = 40degree what is the measure of DEF?
1 answer:
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