Algebra
Calculus
Trigonometry
Matrix
Question
Simplify the expression
21x2
Evaluate
(x(−7))(x(−3))
Remove the parentheses
x(−7)x(−3)
Rewrite the expression
x×7x×3
Multiply the terms
x2×7×3
Multiply the terms
x2×21
Solution
21x2
Show Solution
Find the roots
x=0
Evaluate
(x(−7))(x(−3))
To find the roots of the expression,set the expression equal to 0
(x(−7))(x(−3))=0
Use the commutative property to reorder the terms
(−7x)(x(−3))=0
Use the commutative property to reorder the terms
(−7x)(−3x)=0
Remove the parentheses
−7x(−3x)=0
Multiply the terms
More Steps
Evaluate
−7x(−3x)
Multiply the numbers
More Steps
Evaluate
−7(−3)
Multiplying or dividing an even number of negative terms equals a positive
7×3
Multiply the numbers
21
21x×x
Multiply the terms
21x2
21x2=0
Rewrite the expression
x2=0
Solution
x=0
Show Solution