The right answer is: x + x + 2 + 9 = 29
Step-by-step explanation:
According to given statement,
Side 1: 9 units
Side 2: x units
Side 3: x+2 units
The perimeter of a triangle is given by

Putting the values we get

Hence,
The right answer is: x + x + 2 + 9 = 29
Keywords: Perimeter, triangle
Learn more about perimeter at:
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The equivalent equation is x² + 20x = -102
<h3>
Simplification of quadratic equation</h3>
The equivalent equation can be obtained by factorizing or simplifying the given quadratic equation as shown below;
x² + 20x + 81 = -21
<em>collect similar terms together</em>
x² + 20x + 81 + 21 = 0
x² + 20x + 102 = 0
The equation can also be written as x² + 20x = -102
Thus, the equivalent equation is x² + 20x = -102
Learn more about simplification of quadratic equation here: brainly.com/question/1214333
Answer:
3x^2+1
Step-by-step explanation:
combine terms
C step-by-step the coordinate of that is pretty simple to say but hard at the same time
It's an easy problems. what equations are you trying to find?