Question Simplify the expression 9+6h+h2 Evaluate (−3−h)2A negative base raised to an even power equals a positive (3+h)2Use (a+b)2=a2+2ab+b2 to expand the expression 32+2×3h+h2Solution 9+6h+h2 Show Solution Find the roots h=−3 Evaluate (−3−h)2To find the roots of the expression,set the expression equal to 0 (−3−h)2=0The only way a power can be 0 is when the base equals 0 −3−h=0Move the constant to the right-hand side and change its sign −h=0+3Removing 0 doesn't change the value,so remove it from the expression −h=3Solution h=−3 Show Solution