Question: geS Precalculus 12 use algebraic methods to completely factor each of the following. Show your work. State The zeros.Sketch the graph. Leave answers in exact

the following. Show your work. State The zeros.Sketch the graph. Leave answers

geS Precalculus 12 use algebraic methods to completely factor each of the following. Show your work. State The zeros.Sketch the graph. Leave answers in exact values. (3 marks each) a) P(x) = 2x3 + x2 - 25x + 12 :0 guess X= 3 guess x = 1 2 + 1- 25 +12 X 54+9- 75 + 12 = 0 3 2 1- 25 12 guess x = - 1 6 21 - 12 -2- 1+ 25 +12 X 2 7 - 4 PLX ) = 282 +7x - 4 P(x ) - 7+549 - 4(-8 ) X= 3, - 4, 2 4 P ( x ) - 7+ 540 +32 x' = - 7-" x =-4 (x - 3) ( * + 4 ) ( 2x- 1) P (x ) - 7+ 581 24 = -7+9 x=-z 4 4 b) P(x) = x4-2x3 - 19x2 + 8x +60 guess * = 1 guess x = 2 1- 2- 19 +8 +60 = 48 x 16-16- 76 + 16 +60 = 0 guess x = - 1 2 1 - 2 -19 +8 60 - 1+2-10-8+60=36 X 2 0 - 38 - 60 Xin= 2 14-41-15) 0 - 19- 30 0 2 PL)= x 3 - 19x - 30 2 guess * = 2 8-38-30=-60 guess x = 2 -8+38- 30=0 X 1 = 248 = 5 X= -2 - 3, 5, 2 - 2 1 O - 19 - 30 X2 =. 2 = -3 ( * + 2) (x + 3) ( x- 5 ) ( x - 2 ) -2 4 30 Unit 3 6 - 2 - 15 O P( x ) = x - 2x - 15\f

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