The points (-1, r) and (2, 3) lie on a line with slope -1.Find the missing coordinate r
1 answer:
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Answer:
C. x²+12x+36
Step-by-step explanation:
Since a square's area is figures out with and since the length is x+6, then we get:
(x+6)²=
(x+6)(x+6)=
<em>Use </em><em>FOIL</em><em> method.</em>
First: x²
Outer: 36
Inner: 6x
Last: 6x
x²+36+6x+6x=
x²+12x+36
The answer that fits is C. x²+12x+36.