Question Factor the expression Factor 21(8x−1) Evaluate 4x−21Solution 21(8x−1) Show Solution Find the roots Find the roots of the algebra expression x=81Alternative Form x=0.125 Evaluate 4x−21To find the roots of the expression,set the expression equal to 0 4x−21=0Move the constant to the right-hand side and change its sign 4x=0+21Add the terms 4x=21Multiply by the reciprocal 4x×41=21×41Multiply x=21×41Solution More Steps Evaluate 21×41To multiply the fractions,multiply the numerators and denominators separately 2×41Multiply the numbers 81 x=81Alternative Form x=0.125 Show Solution