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