Algebra
Calculus
Trigonometry
Matrix
Question
Solve the equation
r=−1
Evaluate
r−1−2r=0
Subtract the terms
More Steps
Evaluate
r−2r
Collect like terms by calculating the sum or difference of their coefficients
(1−2)r
Subtract the numbers
−r
−r−1=0
Move the constant to the right-hand side and change its sign
−r=0+1
Removing 0 doesn't change the value,so remove it from the expression
−r=1
Solution
r=−1
Show Solution
Rewrite the equation
x2+y2=1
Evaluate
r−1−2r=0
Evaluate
More Steps
Evaluate
r−1−2r
Subtract the terms
More Steps
Evaluate
r−2r
Collect like terms by calculating the sum or difference of their coefficients
(1−2)r
Subtract the numbers
−r
−r−1
−r−1=0
Rewrite the expression
−r=1
Square both sides of the equation
(−r)2=12
To covert the equation to rectangular coordinates using conversion formulas,substitute x2+y2 for r2
x2+y2=12
Solution
x2+y2=1
Show Solution
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