Answer:
Step-by-step explanation:
To solve this question, we will first expand the expression using the distributive rule:
Therefore:
Simplify:
Add up like terms:
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<h3>Given</h3>
A = 2k² -k -15
L = k² -9
<h3>Find</h3>A/L
<h3>Solution</h3>
A and a' are vertical angles, therefore a' = a
We know: The sum of the measures of triangle is always 180°.
Therefore: a' + b + d = 180° → d = 180° - a - b.
d and c are adjacent angles, therefore d + c = 180°
substitute
180° - a - b+ c = 180° |-180°
-a - b + c = 0 |+a |+b
c = a + b
We know: The sum of the measures of triangle is always 180°.
Therefore: a' + b + d = 180° → d = 180° - a - b.
d and c are adjacent angles, therefore d + c = 180°
substitute
180° - a - b+ c = 180° |-180°
-a - b + c = 0 |+a |+b
c = a + b