Question
Simplify the expression
−30x2
Evaluate
5x(3x−9x)
Subtract the terms
More Steps

Simplify
3x−9x
Collect like terms by calculating the sum or difference of their coefficients
(3−9)x
Subtract the numbers
−6x
5x(−6x)
Multiply the numbers
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Evaluate
5(−6)
Multiplying or dividing an odd number of negative terms equals a negative
−5×6
Multiply the numbers
−30
−30x×x
Solution
−30x2
Show Solution

Find the roots
x=0
Evaluate
(5x)(3x−9x)
To find the roots of the expression,set the expression equal to 0
(5x)(3x−9x)=0
Multiply the terms
5x(3x−9x)=0
Subtract the terms
More Steps

Simplify
3x−9x
Collect like terms by calculating the sum or difference of their coefficients
(3−9)x
Subtract the numbers
−6x
5x(−6x)=0
Multiply the terms
More Steps

Evaluate
5x(−6x)
Multiply the numbers
More Steps

Evaluate
5(−6)
Multiplying or dividing an odd number of negative terms equals a negative
−5×6
Multiply the numbers
−30
−30x×x
Multiply the terms
−30x2
−30x2=0
Change the signs on both sides of the equation
30x2=0
Rewrite the expression
x2=0
Solution
x=0
Show Solution
