Question Simplify the expression 641−83b+415b2−20b3+60b4−96b5+64b6 Evaluate (21−2b)6Solution 641−83b+415b2−20b3+60b4−96b5+64b6 Show Solution Factor the expression 641(1−4b)6 Evaluate (21−2b)6Evaluate 641−83b+415b2−20b3+60b4−96b5+64b6Solution 641(1−4b)6 Show Solution Find the roots b=41Alternative Form b=0.25 Evaluate (21−2b)6To find the roots of the expression,set the expression equal to 0 (21−2b)6=0The only way a power can be 0 is when the base equals 0 21−2b=0Move the constant to the right-hand side and change its sign −2b=0−21Removing 0 doesn't change the value,so remove it from the expression −2b=−21Change the signs on both sides of the equation 2b=21Multiply by the reciprocal 2b×21=21×21Multiply b=21×21Solution More Steps Evaluate 21×21To multiply the fractions,multiply the numerators and denominators separately 2×21Multiply the numbers 41 b=41Alternative Form b=0.25 Show Solution