Algebra
Calculus
Trigonometry
Matrix
Question
Simplify the expression
7x2−63x
Evaluate
(x−9)(x×7)
Remove the parentheses
(x−9)x×7
Use the commutative property to reorder the terms
(x−9)×7x
Multiply the terms
7x(x−9)
Apply the distributive property
7x×x−7x×9
Multiply the terms
7x2−7x×9
Solution
7x2−63x
Show Solution
Find the roots
x1=0,x2=9
Evaluate
(x−9)(x×7)
To find the roots of the expression,set the expression equal to 0
(x−9)(x×7)=0
Use the commutative property to reorder the terms
(x−9)×7x=0
Multiply the terms
7x(x−9)=0
Elimination the left coefficient
x(x−9)=0
Separate the equation into 2 possible cases
x=0x−9=0
Solve the equation
More Steps
Evaluate
x−9=0
Move the constant to the right-hand side and change its sign
x=0+9
Removing 0 doesn't change the value,so remove it from the expression
x=9
x=0x=9
Solution
x1=0,x2=9
Show Solution