
The formula for area of triangle is -

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So, the area of first triangle =



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Area of second triangle =



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Area of second triangle - Area of first triangle



If you use/make a number line, then you will see that the answer is -18 or a. When using a number line, negative = ← and positive = →.
|-8| - (5 + 2)2
8-(7)2
8-14= -6
Follow order of operations
Answer:
sqrt(8) or 2.828
Step-by-step explanation:
You use the distance formula which is sqrt((x2-x1)^2+(y2-y1)^2) where x2 can be either x value