Question
Simplify the expression
18x2−90x
Evaluate
2(x−5)(x×9)
Remove the parentheses
2(x−5)x×9
Multiply the terms
18(x−5)x
Multiply the terms
18x(x−5)
Apply the distributive property
18x×x−18x×5
Multiply the terms
18x2−18x×5
Solution
18x2−90x
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Find the roots
x1=0,x2=5
Evaluate
2(x−5)(x×9)
To find the roots of the expression,set the expression equal to 0
2(x−5)(x×9)=0
Use the commutative property to reorder the terms
2(x−5)×9x=0
Multiply
More Steps

Multiply the terms
2(x−5)×9x
Multiply the terms
18(x−5)x
Multiply the terms
18x(x−5)
18x(x−5)=0
Elimination the left coefficient
x(x−5)=0
Separate the equation into 2 possible cases
x=0x−5=0
Solve the equation
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Evaluate
x−5=0
Move the constant to the right-hand side and change its sign
x=0+5
Removing 0 doesn't change the value,so remove it from the expression
x=5
x=0x=5
Solution
x1=0,x2=5
Show Solution
