What are the solutions to the equation x2 = 9? Explain why is more than one solution to the equation.
1 answer:
ANSWER
The degree is two so it must have more than one solution.
EXPLANATION
The given equation is
Let us use the square root method to solve this equation.
Since the degree of x is two, the <em>fundamental theorem of algebra</em> says it must have 2 roots.
We take square root to obtain,
Split the plus or minus sign to obtain,
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Answer:
13) ⇒
15) ⇒
Step-by-step explanation:
Given expression:
13)
15)
Write the expressions in radical form.
Solution:
For an expression with exponents as fraction like
the numerator represents the power it is raised to and the denominator
represents the nth root of the expression.
For an expression with exponents as negative fraction like
We take the reciprocal of the term by rule for negative exponents.
So it is written as:
using the above properties we can write the given expressions in radical form.
13)
⇒ [Using rule of negative exponents]
⇒ [writing in radical form]
15)
⇒ [Since 2nd root is given as
in radical form]