When determining if you have a perfect square trinomial, what must the first and third term be?
1 answer:
The expansion of a perfect square is
In words, the square of a sum of two terms is the sum of the squares of the two terms ( and
), plus twice the product of the two terms (
)
So, when determining if you have a perfect square trinomial, you should have two perfect squares. Note that they don't have to be the first and third term, since you can rearrange terms as you prefer.
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Answer : The value of x and y is, and
Step-by-step explanation :
First we have to calculate the angle B.
As we know that,
The given triangle is an isosceles triangle in which the angles opposite to equal sides are always equal.
Thus,
Given :
Now have to calculate the angle A.
As we know that the sum of interior angles of a triangle is equal to .
Now we have to determine the angle y.
As we know that, line AD is an angle bisector. That means, it divides into two equal angles. So,
Now we have to determine the angle x.
As we know that the sum of interior angles of a triangle is equal to .
Thus, the value of x and y is, and