Question Simplify the expression −4n2+4n−1 Evaluate −(2n−1)2Expand the expression More Steps Evaluate (2n−1)2Use (a−b)2=a2−2ab+b2 to expand the expression (2n)2−2×2n×1+12Calculate 4n2−4n+1 −(4n2−4n+1)Solution −4n2+4n−1 Show Solution Find the roots n=21Alternative Form n=0.5 Evaluate −(2n−1)2To find the roots of the expression,set the expression equal to 0 −(2n−1)2=0Change the signs on both sides of the equation (2n−1)2=0The only way a power can be 0 is when the base equals 0 2n−1=0Move the constant to the right-hand side and change its sign 2n=0+1Removing 0 doesn't change the value,so remove it from the expression 2n=1Divide both sides 22n=21Solution n=21Alternative Form n=0.5 Show Solution
Algebra
Calculus
Trigonometry
Matrix Algebra Calculus Trigonometry Matrix