Question Simplify the expression Solution x2−2x−8 Evaluate (x+2)(x−4)Apply the distributive property x×x−x×4+2x−2×4Multiply the terms x2−x×4+2x−2×4Use the commutative property to reorder the terms x2−4x+2x−2×4Multiply the numbers x2−4x+2x−8Solution More Steps Evaluate −4x+2xCollect like terms by calculating the sum or difference of their coefficients (−4+2)xAdd the numbers −2x x2−2x−8 Show Solution Find the roots Find the roots of the algebra expression x1=−2,x2=4 Evaluate (x+2)(x−4)To find the roots of the expression,set the expression equal to 0 (x+2)(x−4)=0Separate the equation into 2 possible cases x+2=0x−4=0Solve the equation More Steps Evaluate x+2=0Move the constant to the right-hand side and change its sign x=0−2Removing 0 doesn't change the value,so remove it from the expression x=−2 x=−2x−4=0Solve the equation More Steps Evaluate x−4=0Move the constant to the right-hand side and change its sign x=0+4Removing 0 doesn't change the value,so remove it from the expression x=4 x=−2x=4Solution x1=−2,x2=4 Show Solution