Question Simplify the expression 3x2−120x Evaluate 3x2−8x×15Solution 3x2−120x Show Solution Factor the expression 3x(x−40) Evaluate 3x2−8x×15Multiply the terms 3x2−120xRewrite the expression 3x×x−3x×40Solution 3x(x−40) Show Solution Find the roots x1=0,x2=40 Evaluate (3x2−8x×15)To find the roots of the expression,set the expression equal to 0 3x2−8x×15=0Multiply the terms 3x2−120x=0Factor the expression More Steps Evaluate 3x2−120xRewrite the expression 3x×x−3x×40Factor out 3x from the expression 3x(x−40) 3x(x−40)=0When the product of factors equals 0,at least one factor is 0 3x=0x−40=0Solve the equation for x x=0x−40=0Solve the equation for x More Steps Evaluate x−40=0Move the constant to the right-hand side and change its sign x=0+40Removing 0 doesn't change the value,so remove it from the expression x=40 x=0x=40Solution x1=0,x2=40 Show Solution