Question Simplify the expression x2−249d Evaluate d×x2−272Multiply the terms x2−2d×72Use the commutative property to reorder the terms x2−272dSolution x2−249d Show Solution Find the excluded values x=2,x=−2 Evaluate d×x2−272To find the excluded values,set the denominators equal to 0 x2−2=0Move the constant to the right-hand side and change its sign x2=0+2Removing 0 doesn't change the value,so remove it from the expression x2=2Take the root of both sides of the equation and remember to use both positive and negative roots x=±2Separate the equation into 2 possible cases x=2x=−2Solution x=2,x=−2 Show Solution
Algebra
Calculus
Trigonometry
Matrix Algebra Calculus Trigonometry Matrix