Algebra
Calculus
Trigonometry
Matrix
Question
Simplify the expression
Q
Evaluate
Q(t−1)−Q(t−2)
Expand the expression
More Steps
Calculate
Q(t−1)
Apply the distributive property
Qt−Q×1
Any expression multiplied by 1 remains the same
Qt−Q
Qt−Q−Q(t−2)
Expand the expression
More Steps
Calculate
−Q(t−2)
Apply the distributive property
−Qt−(−Q×2)
Use the commutative property to reorder the terms
−Qt−(−2Q)
If a negative sign or a subtraction symbol appears outside parentheses, remove the parentheses and change the sign of every term within the parentheses
−Qt+2Q
Qt−Q−Qt+2Q
The sum of two opposites equals 0
More Steps
Evaluate
Qt−Qt
Collect like terms
(1−1)Qt
Add the coefficients
0×Qt
Calculate
0
0−Q+2Q
Remove 0
−Q+2Q
Collect like terms by calculating the sum or difference of their coefficients
(−1+2)Q
Solution
Q
Show Solution
