Algebra
Calculus
Trigonometry
Matrix
Question
Simplify the expression
−23x2
Evaluate
21x2−2x2
Collect like terms by calculating the sum or difference of their coefficients
(21−2)x2
Solution
More Steps
Evaluate
21−2
Reduce fractions to a common denominator
21−22×2
Write all numerators above the common denominator
21−2×2
Multiply the numbers
21−4
Subtract the numbers
2−3
Use b−a=−ba=−ba to rewrite the fraction
−23
−23x2
Show Solution
Find the roots
x=0
Evaluate
21x2−2x2
To find the roots of the expression,set the expression equal to 0
21x2−2x2=0
Subtract the terms
More Steps
Simplify
21x2−2x2
Collect like terms by calculating the sum or difference of their coefficients
(21−2)x2
Subtract the numbers
More Steps
Evaluate
21−2
Reduce fractions to a common denominator
21−22×2
Write all numerators above the common denominator
21−2×2
Multiply the numbers
21−4
Subtract the numbers
2−3
Use b−a=−ba=−ba to rewrite the fraction
−23
−23x2
−23x2=0
Change the signs on both sides of the equation
23x2=0
Rewrite the expression
x2=0
Solution
x=0
Show Solution