WARM UP EVALUATING EXPRESSIONS Evaluate the expression for the given value of the variable (Lesson 2.5). 1.-3(x) when x = 9 2.4(-6)(m) when m = (-n)(-n) when n = 2 4.2(-1)(-x) 3 when x = -3 4
WARM UP EVALUATING EXPRESSIONS Evaluate the expression for the given value of the variable (Lesson 2.5). 1.-3(x) when x = 9 2.4(-6)(m) when m = (-n)(-n) when n = 2 4.2(-1)(-x) 3 when x = -3 3
WARM UP EVALUATING EXPRESSIONS Evaluate the expression for the given value of the variable (Lesson 2.5). 1.-3(x) when x = 9 2.4(-6)(m) when m = (-n)(-n) when n = 2 4.2(-1)(-x) 3 when x = -3 2
WARM UP EVALUATING EXPRESSIONS Evaluate the expression for the given value of the variable (Lesson 2.5). 1.-3(x) when x = 9 2.4(-6)(m) when m = (-n)(-n) when n = 2 4.2(-1)(-x) 3 when x = -3 1
EVALUATING EXPRESSIONS Evaluate the expression for the given value of the variable (Lesson 2.5). 1.-3(x) when x = 9 2.4(-6)(m) when m = (-n)(-n) when n = 2 4.2(-1)(-x) 3 when x = -3 WARM UP 0
GOAL Use the quadratic formula to solve a quadratic equation. KEY WORDS Quadratic formula Vertical Motion model 9.6 Solving Quadratic Equations by the Quadratic Formula
The quadratic formula gives the solutions of ax 2 + bx + c = 0 in terms of the coefficients a, b and c. 9.6 Solving Quadratic Equations by the Quadratic Formula
THE QUADRATIC FORMULA 9.6 Solving Quadratic Equations by the Quadratic Formula
Checkpoint Use the Quadratic Formula. Use the quadratic formula to solve the equation. 1.x 2 – 4x + 3 = 0 2.2x 2 + x - 10 = 0 3.-x 2 + 3x + 4 = Solving Quadratic Equations by the Quadratic Formula