Warm Up Simplify each expression by combining like terms. 1. 4x + 2x

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Presentation transcript:

Warm Up Simplify each expression by combining like terms. 1. 4x + 2x 2. 3y + 7y 3. 8p – 5p 4. 5n + 6n2 Simplify each expression. 5. 3(x + 4) 6. –2(t + 3) 7. –1(x2 – 4x – 6) 6x 10y 3p not like terms 3x + 12 –2t – 6 –x2 + 4x + 6

Graph the line given the slope and y-intercept. slope = 4; y-intercept =

Quiz 7.5 Classify each polynomial according to its degree and number of terms. a. x3 + x2 – x + 2 Degree 3 Terms 4 cubic polynomial b. 6 constant monomial Degree 0 Terms 1 c. –3y8 + 18y5 + 14y Degree 8 Terms 3 8th-degree trinomial Tables

Learning Target Students will be able to: Add and subtract polynomials.

Just as you can perform operations on numbers, you can perform operations on polynomials. To add or subtract polynomials, combine like terms.

Add or Subtract.. A. 12p3 + 11p2 + 8p3 D. 10m2n + 4m2n – 8m2n 12p3 + 11p2 + 8p3 10m2n + 4m2n – 8m2n 20p3 + 11p2 6m2n B. 5x2 – 6 – 3x + 8 E. 2s2 + 3s2 + s 5x2 – 6 – 3x + 8 2s2 + 3s2 + s 5s2 + s 5x2 – 3x + 2 C. t2 + 2s2 – 4t2 – s2 F. 4z4 – 8 + 16z4 + 2 t2 + 2s2 – 4t2 – s2 4z4 – 8 + 16z4 + 2 –3t2 + s2 20z4 – 6

Add or subtract. G. 2x8 + 7y8 – x8 – y8 2x8 + 7y8 – x8 – y8 x8 + 6y8 H. 9b3c2 + 5b3c2 – 13b3c2 9b3c2 + 5b3c2 – 13b3c2 b3c2

Polynomials can be added in either vertical or horizontal form. In vertical form, align the like terms and add: 5x2 + 4x + 1 + 2x2 + 5x + 2 7x2 + 9x + 3 (5x2 + 4x + 1) + (2x2 + 5x + 2) = 7x2 + 9x + 3

Add. A. (4m2 + 5) + (m2 – m + 6) 5m2 – m + 11 B. (10xy + x) + (–3xy + y) 7xy + x + y C. (6x2 – 4y) + (3x2 + 3y – 8x2 – 2y) x2 – 3y D.

Add (5a3 + 3a2 – 6a + 12a2) + (7a3 – 10a). 12a3 + 15a2 – 16a Distribute. –(2x3 – 3x + 7)= –2x3 + 3x – 7 Subtract. (x3 + 4y) – (2x3) –x3 + 4y

Subtract. (7m4 – 2m2) –(5m4 – 5m2 + 8) 2m4 + 3m2 – 8

Subtract. (–10x2 – 3x + 7) – (x2 – 9) –11x2 – 3x + 16

Subtract. (9q2 – 3q) – (q2 – 5)

Subtract. (2x2 – 3x2 + 1) – (x2 + x + 1)

The profits of two different manufacturing plants can be modeled as shown, where x is the number of units produced at each plant. Use the information above to write a polynomial that represents the total profits from both plants. –0.03x2 + 25x – 1500 + –0.02x2 + 21x – 1700 –0.05x2 + 46x – 3200