Question Factor the expression (1−r)(1+r) Evaluate 1−r2Rewrite the expression in exponential form 12−r2Solution (1−r)(1+r) Show Solution Find the roots r1=−1,r2=1 Evaluate 1−r2To find the roots of the expression,set the expression equal to 0 1−r2=0Move the constant to the right-hand side and change its sign −r2=0−1Removing 0 doesn't change the value,so remove it from the expression −r2=−1Change the signs on both sides of the equation r2=1Take the root of both sides of the equation and remember to use both positive and negative roots r=±1Simplify the expression r=±1Separate the equation into 2 possible cases r=1r=−1Solution r1=−1,r2=1 Show Solution
Algebra
Calculus
Trigonometry
Matrix Algebra Calculus Trigonometry Matrix