Question Simplify the expression 25a2−420a Evaluate 25a2−35a×12Solution 25a2−420a Show Solution Factor the expression 5a(5a−84) Evaluate 25a2−35a×12Multiply the terms 25a2−420aRewrite the expression 5a×5a−5a×84Solution 5a(5a−84) Show Solution Find the roots a1=0,a2=584Alternative Form a1=0,a2=16.8 Evaluate 25a2−35a×12To find the roots of the expression,set the expression equal to 0 25a2−35a×12=0Multiply the terms 25a2−420a=0Factor the expression More Steps Evaluate 25a2−420aRewrite the expression 5a×5a−5a×84Factor out 5a from the expression 5a(5a−84) 5a(5a−84)=0When the product of factors equals 0,at least one factor is 0 5a=05a−84=0Solve the equation for a a=05a−84=0Solve the equation for a More Steps Evaluate 5a−84=0Move the constant to the right-hand side and change its sign 5a=0+84Removing 0 doesn't change the value,so remove it from the expression 5a=84Divide both sides 55a=584Divide the numbers a=584 a=0a=584Solution a1=0,a2=584Alternative Form a1=0,a2=16.8 Show Solution