Question Simplify the expression 7m−21m2 Evaluate 7m(1−3m)Apply the distributive property 7m×1−7m×3mAny expression multiplied by 1 remains the same 7m−7m×3mSolution More Steps Evaluate 7m×3mMultiply the numbers 21m×mMultiply the terms 21m2 7m−21m2 Show Solution Find the roots m1=0,m2=31Alternative Form m1=0,m2=0.3˙ Evaluate 7m(1−3m)To find the roots of the expression,set the expression equal to 0 7m(1−3m)=0Elimination the left coefficient m(1−3m)=0Separate the equation into 2 possible cases m=01−3m=0Solve the equation More Steps Evaluate 1−3m=0Move the constant to the right-hand side and change its sign −3m=0−1Removing 0 doesn't change the value,so remove it from the expression −3m=−1Change the signs on both sides of the equation 3m=1Divide both sides 33m=31Divide the numbers m=31 m=0m=31Solution m1=0,m2=31Alternative Form m1=0,m2=0.3˙ Show Solution