Question Simplify the expression 4x2−56x+196 Evaluate (2x−14)2Use (a−b)2=a2−2ab+b2 to expand the expression (2x)2−2×2x×14+142Solution 4x2−56x+196 Show Solution Factor the expression 4(x−7)2 Evaluate (2x−14)2Evaluate 4x2−56x+196Solution 4(x−7)2 Show Solution Find the roots x=7 Evaluate (2x−14)2To find the roots of the expression,set the expression equal to 0 (2x−14)2=0The only way a power can be 0 is when the base equals 0 2x−14=0Move the constant to the right-hand side and change its sign 2x=0+14Removing 0 doesn't change the value,so remove it from the expression 2x=14Divide both sides 22x=214Divide the numbers x=214Solution More Steps Evaluate 214Reduce the numbers 17Calculate 7 x=7 Show Solution