Please help me with 7,13,19 step by step ?????? 3.6In Problems 5-22, graph each polynomial function by following Steps 1 through 5 on page 191.Skill Building\5 (x) = x°(x – 3)& f(x) = (x – 1) (x + 3)26. f(x) = x(x + 2)27. f(x) = (x + 4)²(1 – x)9. f(x) = -2(x + 2) (x – 2)³10. f(x) = --(x + 4) (x – 1)³IL. f(x) = (x + 1) (x – 2) (x + 4)12. f(x) = (x – 1) (x + 4) (x – 3)13. f(x) = x(1 – x) (2 – x)14. f(x) = (3 – x) (2 + x) (x + 1)15. f(x) = (x + 1)²(x – 2)²16. f(x) = (x – 4)²(x + 2)²17. f(x) = -2(x – 1)²(x² – 16) 18. f(x) = (x + 1)³(x – 3)19. f(x) = 5x(x² - 4) (x + 3)(d)20. f(x) = (x – 2)²(x + 2) (x + 4)21. f(x) = x²(x – 2)(x + 3)22 flx) Steps for Graphing a Polynomial FunctionSTEP 1: Determine the end behavior of the graph of the function.STEP 2: Find the x- and y-intercepts of the graph of the function.STEP 3: Determine the real zeros of the function and their multiplicity. Use this information to determinewhether the graph crosses or touches the x-axis at each x-intercept.STEP 4: Determine the maximum number of turning points on the graph of the function.SIEP 5: Use the information in Steps 1 through 4 to draw a complete graph of the function. To help establishthe y-axis scale, find additional points on the graph on each side of any x-intercept.

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In Problems 5-22, graph each polynomial function by following Steps 1 through 5 on page 191. 6. f(x) = x(x + 2)² \s (x) = x°(x – 3) & f(x) = (x - 1) (x + 3)2 %3D 7. f(x) = (x + 4)²(1 – x) 9. f(x) = -2(x + 2) (x – 2)³ 10. f(x) = --(x + 4) (x – 1)³ 11. f(x) = (x + 1) (x - 2) (x + 4) 12. f(x) = (x – 1) (x + 4) (x – 3) 13. f(x) = x(1 – x) (2 – x) 14. f(x) = (3 – x) (2 + x) (x + 1) 15. f(x) = (x + 1)²(x – 2)² 16. f(x) = (x – 4)²(x + 2)² 17. f(x) = -2(x – 1)²(x² – 16) 18. f(x) = (x + 1)³ (x – 3) 19. f(x) = 5x(x² – 4) (x + 3) 21.2 20. f(x) = (x – 2)²(x + 2) (x + 4) 21. f(x) = x²(x – 2) (x? + 3) 22 f(x)