Question Simplify the expression −7−4x Evaluate 2−4x−9Solution −7−4x Show Solution Find the roots x=−47Alternative Form x=−1.75 Evaluate 2−4x−9To find the roots of the expression,set the expression equal to 0 2−4x−9=0Subtract the numbers −7−4x=0Move the constant to the right-hand side and change its sign −4x=0+7Removing 0 doesn't change the value,so remove it from the expression −4x=7Change the signs on both sides of the equation 4x=−7Divide both sides 44x=4−7Divide the numbers x=4−7Solution x=−47Alternative Form x=−1.75 Show Solution
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