Question Simplify the expression 4+4b+b2 Evaluate (−2−b)2A negative base raised to an even power equals a positive (2+b)2Use (a+b)2=a2+2ab+b2 to expand the expression 22+2×2b+b2Solution 4+4b+b2 Show Solution Find the roots b=−2 Evaluate (−2−b)2To find the roots of the expression,set the expression equal to 0 (−2−b)2=0The only way a power can be 0 is when the base equals 0 −2−b=0Move the constant to the right-hand side and change its sign −b=0+2Removing 0 doesn't change the value,so remove it from the expression −b=2Solution b=−2 Show Solution
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