Question Simplify the expression x2−28x Evaluate x2−4x×7Solution x2−28x Show Solution Factor the expression x(x−28) Evaluate x2−4x×7Multiply the terms x2−28xRewrite the expression x×x−x×28Solution x(x−28) Show Solution Find the roots x1=0,x2=28 Evaluate x2−4x×7To find the roots of the expression,set the expression equal to 0 x2−4x×7=0Multiply the terms x2−28x=0Factor the expression More Steps Evaluate x2−28xRewrite the expression x×x−x×28Factor out x from the expression x(x−28) x(x−28)=0When the product of factors equals 0,at least one factor is 0 x=0x−28=0Solve the equation for x More Steps Evaluate x−28=0Move the constant to the right-hand side and change its sign x=0+28Removing 0 doesn't change the value,so remove it from the expression x=28 x=0x=28Solution x1=0,x2=28 Show Solution