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
95
Step-by-step explanation:
she would have to get At Least 95 or better to balance it out
Answer:
2/3
Step-by-step explanation:
12/6=2
18/6=3
so
the fraction is 2/3
i think this is what your teachers means, lmk if thats wrong
