Algebra
Calculus
Trigonometry
Matrix
Question
Find the roots
x1=−7,x2=7
Alternative Form
x1≈−2.645751,x2≈2.645751
Evaluate
x2−7
To find the roots of the expression,set the expression equal to 0
x2−7=0
Move the constant to the right-hand side and change its sign
x2=0+7
Removing 0 doesn't change the value,so remove it from the expression
x2=7
Take the root of both sides of the equation and remember to use both positive and negative roots
x=±7
Separate the equation into 2 possible cases
x=7x=−7
Solution
x1=−7,x2=7
Alternative Form
x1≈−2.645751,x2≈2.645751
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