Presentation on theme: "ALGEBRAIC EXPRESSIONS"— Presentation transcript:
1 ALGEBRAIC EXPRESSIONS Step 1 Write the problem.Step 2 Substitute in the values forthe unknown (variable).Step 3 Use PEMDAS(remember to go left to right).Show all steps!
2 TermsAlgebraic Expression- A mathematical phrase involving at least one variable. Also can contain numbers and operation symbols.Coefficient- The number multiplied by the variable.Constant- The number that does not change or lose its value in an expression.
3 30n+6 algebraic expression 30 is the coefficient n is the variable EXAMPLE OF TERMS30n+6 algebraic expression30 is the coefficientn is the variable6 is the constant
4 Problem #1Given the formula P = k2 w,find P if k = 5 and w = -3.
5 If V = lwh, what is the value of V when l = 2, w = 3, and h = 4x? Problem #2If V = lwh, what is the value of V when l = 2, w = 3, and h = 4x?
6 If x = 1 and y = -2, which expression has a value of 3? x = y 2. x - y Problem 3If x = 1 and y = -2,which expression has avalue of 3?x = y 2. x - y3. xy y - x
7 Problem #4If a = 1 and b = -2,find the value of (a+b)2.
8 Use the formula V = x 2h, to find V when x = 6 and h = 2. Problem #5Use the formula V = x 2h, to find V when x = 6 and h = 2.
9 Evaluate the expression Problem #6Evaluate the expression(6a)2bif a = 2 and b = -1.