If A, B, and C are the measures of the angles of any triangle and if a, b, and c are the lengths of the sides opposite the cor
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Answer:
B is 6.
Step-by-step explanation:
We are trying to find a value for such that:
is true for every
.
So let's choose :
Divide both sides by -8:
Note: I didn't want to choose y to be 0 because the value of B would disappear from the equation. So you should be able to have chosen any x and y except for y=0 to solve the equation for B.
Check:
So let's check and use foil to multiply out the right hand side.
There was a 2 in front of that multplicapltiation:
This is exactly what we have on the left hand side of your given equation.