Question Factor the expression 7x(3x−8) Evaluate 21x2−56xRewrite the expression 7x×3x−7x×8Solution 7x(3x−8) Show Solution Find the roots x1=0,x2=38Alternative Form x1=0,x2=2.6˙ Evaluate 21x2−56xTo find the roots of the expression,set the expression equal to 0 21x2−56x=0Factor the expression More Steps Evaluate 21x2−56xRewrite the expression 7x×3x−7x×8Factor out 7x from the expression 7x(3x−8) 7x(3x−8)=0When the product of factors equals 0,at least one factor is 0 7x=03x−8=0Solve the equation for x x=03x−8=0Solve the equation for x More Steps Evaluate 3x−8=0Move the constant to the right-hand side and change its sign 3x=0+8Removing 0 doesn't change the value,so remove it from the expression 3x=8Divide both sides 33x=38Divide the numbers x=38 x=0x=38Solution x1=0,x2=38Alternative Form x1=0,x2=2.6˙ Show Solution
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