Question Simplify the expression Solution x2+5x−36 Evaluate (x+9)(x−4)Apply the distributive property x×x−x×4+9x−9×4Multiply the terms x2−x×4+9x−9×4Use the commutative property to reorder the terms x2−4x+9x−9×4Multiply the numbers x2−4x+9x−36Solution More Steps Evaluate −4x+9xCollect like terms by calculating the sum or difference of their coefficients (−4+9)xAdd the numbers 5x x2+5x−36 Show Solution Find the roots Find the roots of the algebra expression x1=−9,x2=4 Evaluate (x+9)(x−4)To find the roots of the expression,set the expression equal to 0 (x+9)(x−4)=0Separate the equation into 2 possible cases x+9=0x−4=0Solve the equation More Steps Evaluate x+9=0Move the constant to the right-hand side and change its sign x=0−9Removing 0 doesn't change the value,so remove it from the expression x=−9 x=−9x−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=−9x=4Solution x1=−9,x2=4 Show Solution