A - -ianmont Rooklet 3A Mathematics 10C 20 Assignment Booklet 3B (3 marks) 6. The area of a square is 49 - 28x + 4x square units, where x represents a positive integer. Write the possible expression for the perimeter of the square. HINT: You will need to find the side length first, and then calculate the perimeter. Area = 49 - 28x + 4x2 (firms) PRACT TT 9. (4 marks) 7. After completing this lesson, Bohdan made the following conclusions: 1. a2 - 206 - 62 = (a - b)2 as long as b # 0 II. a2+ 62 = ( a + 6 ) ( a + 6 ) III. a2 - 62 = a2 - 206 + 62 IV. (a + 6)2 = a2 + 2ab + 62 Analyze his statements and state whether each equation is sometimes, always, or never true. Explain your reasoning for each. ILE ASSIGN\fMathematics 10C 12 Assignment Booklet 3B (2 marks) e. 602 + 7cd - 10k * 1 2 marks ) 1 . 41 + 15 k 12 marks ) g. 6m' + 13mn + 2n? meg (3 marks) 2. You can estimate the height h in metres, of a toy rocket at any time t in seconds, during its flight using the formula h = -5t2 + 23t+ 10. Write the formula in factored form. Then calculate the height of the rocket 3 seconds after it is launched using the factored form. 4 ASSIG .T