Algebra
Calculus
Trigonometry
Matrix
Question
Simplify the expression
7m2−21m
Evaluate
(m−3)(m×7)
Remove the parentheses
(m−3)m×7
Use the commutative property to reorder the terms
(m−3)×7m
Multiply the terms
7m(m−3)
Apply the distributive property
7m×m−7m×3
Multiply the terms
7m2−7m×3
Solution
7m2−21m
Show Solution
Find the roots
m1=0,m2=3
Evaluate
(m−3)(m×7)
To find the roots of the expression,set the expression equal to 0
(m−3)(m×7)=0
Use the commutative property to reorder the terms
(m−3)×7m=0
Multiply the terms
7m(m−3)=0
Elimination the left coefficient
m(m−3)=0
Separate the equation into 2 possible cases
m=0m−3=0
Solve the equation
More Steps
Evaluate
m−3=0
Move the constant to the right-hand side and change its sign
m=0+3
Removing 0 doesn't change the value,so remove it from the expression
m=3
m=0m=3
Solution
m1=0,m2=3
Show Solution