Algebra
Calculus
Trigonometry
Matrix
Question
Simplify the expression
−3r2
Evaluate
r2×5−r2×8
Use the commutative property to reorder the terms
5r2−r2×8
Use the commutative property to reorder the terms
5r2−8r2
Collect like terms by calculating the sum or difference of their coefficients
(5−8)r2
Solution
−3r2
Show Solution
Find the roots
r=0
Evaluate
r2×5−r2×8
To find the roots of the expression,set the expression equal to 0
r2×5−r2×8=0
Use the commutative property to reorder the terms
5r2−r2×8=0
Use the commutative property to reorder the terms
5r2−8r2=0
Subtract the terms
More Steps
Simplify
5r2−8r2
Collect like terms by calculating the sum or difference of their coefficients
(5−8)r2
Subtract the numbers
−3r2
−3r2=0
Change the signs on both sides of the equation
3r2=0
Rewrite the expression
r2=0
Solution
r=0
Show Solution