Question Simplify the expression x7−21 Evaluate x6×x−21Solution More Steps Evaluate x6×xUse the product rule an×am=an+m to simplify the expression x6+1Add the numbers x7 x7−21 Show Solution Find the roots x=721Alternative Form x≈1.544858 Evaluate x6×x−21To find the roots of the expression,set the expression equal to 0 x6×x−21=0Multiply the terms More Steps Evaluate x6×xUse the product rule an×am=an+m to simplify the expression x6+1Add the numbers x7 x7−21=0Move the constant to the right-hand side and change its sign x7=0+21Removing 0 doesn't change the value,so remove it from the expression x7=21Take the 7-th root on both sides of the equation 7x7=721Solution x=721Alternative Form x≈1.544858 Show Solution
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