Question Factor the expression 21(x+8) Evaluate 21x+4Solution 21(x+8) Show Solution Find the roots x=−8 Evaluate 21x+4To find the roots of the expression,set the expression equal to 0 21x+4=0Move the constant to the right-hand side and change its sign 21x=0−4Removing 0 doesn't change the value,so remove it from the expression 21x=−4Multiply by the reciprocal 21x×2=−4×2Multiply x=−4×2Solution x=−8 Show Solution
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