Question Simplify the expression 9+6x+x2 Evaluate (−3−x)2A negative base raised to an even power equals a positive (3+x)2Use (a+b)2=a2+2ab+b2 to expand the expression 32+2×3x+x2Solution 9+6x+x2 Show Solution Find the roots x=−3 Evaluate (−3−x)2To find the roots of the expression,set the expression equal to 0 (−3−x)2=0The only way a power can be 0 is when the base equals 0 −3−x=0Move the constant to the right-hand side and change its sign −x=0+3Removing 0 doesn't change the value,so remove it from the expression −x=3Solution x=−3 Show Solution
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Calculus
Trigonometry
Matrix Algebra Calculus Trigonometry Matrix