Question: 5. State all values of b for which the expression x' + bx - 10 is factorable. Justify. 3 , - 9 6. State the

5. State all values of b for which the expression x' + bx - 10 is factorable. Justify. 3 , - 9 6. State the degree of each polynomial equation. Then solve the equation using an appropriate method. b) + (12x - 16) + 2x = 8 - 3(x + 1) - 18x a) 3x + 15x = +187 Degree , 3 3 x 3 +15 x 2 + 18x = 0 3 x ( x 4 + 5 x + 1 6, ) = 0 ( x to ). 50 7. The graph of the quadratic function, Q(x), is shown. a) Write the equation of Q(x) in vertex form. Q4) : ( * +6) 2 + 8 b) Choose a point on the parabola (other than the vertex) and verify algebraically that it lies on the graph. -8 6) 20 6 = 1- 8 +6) 78 - 8 6-2+8 Rewrite the function in standard form. Q ( x ) = ( * +6 ) ( x +6 ) + 8 QQ) = x 2 +18x+ 36+ 8 al ) = x2 +12x +38 On what open interval is the function increasing? Increasing : ( 10, - 6)

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