Answer:200
Step-by-step explanation:
Use FOIL
28x² -8xy +7xy -2y²
28x² -xy -2y²
Axis of symmetry- x=-1
-b/2a
Mark brainliest please
Answer:
8.2 units
Step-by-step explanation:
Given that the only information for our triangle are 2 sides and 1 angle, we must use the Law of Cosines to find side BC
<u />
<u>Recall the Law of Cosines</u>
<u />
<u>Identify angles and sides</u>
<u />
<u>Solve for side "a"</u>
<u />
Therefore, the length of line segment BC is about 8.2 units
5,12,13
5X5=25
12X12=144
25+144=169
answer: square root 169=13