问题 Factor the expression Factor −2b3(1+4b) Evaluate −2b3−8b4Rewrite the expression −2b3−2b3×4b解题方案 −2b3(1+4b) 显示解题方案 Find the roots Find the roots of the algebra expression b1=−41,b2=0Alternative Form b1=−0.25,b2=0 Evaluate −2b3−8b4To find the roots of the expression,set the expression equal to 0 −2b3−8b4=0Factor the expression −2b3(1+4b)=0Divide both sides b3(1+4b)=0Separate the equation into 2 possible cases b3=01+4b=0The only way a power can be 0 is when the base equals 0 b=01+4b=0Solve the equation 更多步骤 Evaluate 1+4b=0Move the constant to the right-hand side and change its sign 4b=0−1Removing 0 doesn't change the value,so remove it from the expression 4b=−1Divide both sides 44b=4−1Divide the numbers b=4−1Use b−a=−ba=−ba to rewrite the fraction b=−41 b=0b=−41解题方案 b1=−41,b2=0Alternative Form b1=−0.25,b2=0 显示解题方案
