Question Factor the expression x(21x−5) Evaluate 21x2−5xRewrite the expression x×21x−x×5Solution x(21x−5) Show Solution Find the roots x1=0,x2=215Alternative Form x1=0,x2=0.2˙38095˙ Evaluate 21x2−5xTo find the roots of the expression,set the expression equal to 0 21x2−5x=0Factor the expression More Steps Evaluate 21x2−5xRewrite the expression x×21x−x×5Factor out x from the expression x(21x−5) x(21x−5)=0When the product of factors equals 0,at least one factor is 0 x=021x−5=0Solve the equation for x More Steps Evaluate 21x−5=0Move the constant to the right-hand side and change its sign 21x=0+5Removing 0 doesn't change the value,so remove it from the expression 21x=5Divide both sides 2121x=215Divide the numbers x=215 x=0x=215Solution x1=0,x2=215Alternative Form x1=0,x2=0.2˙38095˙ Show Solution
Algebra
Calculus
Trigonometry
Matrix Algebra Calculus Trigonometry Matrix