Question Simplify the expression −21a−52 Evaluate −21a−32×53Solution More Steps Evaluate −32×53Reduce the numbers −2×51Multiply the numbers −52 −21a−52 Show Solution Factor the expression −101(5a+4) Evaluate −21a−32×53Multiply the numbers More Steps Evaluate 32×53Reduce the numbers 2×51Multiply the numbers 52 −21a−52Solution −101(5a+4) Show Solution Find the roots a=−54Alternative Form a=−0.8 Evaluate −21a−32×53To find the roots of the expression,set the expression equal to 0 −21a−32×53=0Multiply the numbers More Steps Evaluate 32×53Reduce the numbers 2×51Multiply the numbers 52 −21a−52=0Move the constant to the right-hand side and change its sign −21a=0+52Add the terms −21a=52Change the signs on both sides of the equation 21a=−52Multiply by the reciprocal 21a×2=−52×2Multiply a=−52×2Solution More Steps Evaluate −52×2Multiply the numbers −52×2Multiply the numbers −54 a=−54Alternative Form a=−0.8 Show Solution