Question Simplify the expression k2+6k+9 Evaluate (−k−3)2A negative base raised to an even power equals a positive (k+3)2Use (a+b)2=a2+2ab+b2 to expand the expression k2+2k×3+32Solution k2+6k+9 Show Solution Find the roots k=−3 Evaluate (−k−3)2To find the roots of the expression,set the expression equal to 0 (−k−3)2=0The only way a power can be 0 is when the base equals 0 −k−3=0Move the constant to the right-hand side and change its sign −k=0+3Removing 0 doesn't change the value,so remove it from the expression −k=3Solution k=−3 Show Solution
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Calculus
Trigonometry
Matrix Algebra Calculus Trigonometry Matrix