1. . state the domain A. y =1 B. Given f (x) = x2 + 3x - 12, find f ( 5 ) ___ x

Question

1. . state the domain    A. y =1                 B. Given f (x) = x2 + 3x - 12, find f ( 5 )             ___             x = 4 2. A. simplify : 10x2 + 17x +3             B. solve      7      -     5       =    60                       ____________                           _____      ____        ______                       12x2 + 20x +3                            x- 4          x +4         x2 - 16 3. simplify ; use rules ofradicals  A.    718 + 650 -572 1. . state the domain    A. y =1                 B. Given f (x) = x2 + 3x - 12, find f ( 5 )             ___             x = 4 2. A. simplify : 10x2 + 17x +3             B. solve      7      -     5       =    60                       ____________                           _____      ____        ______                       12x2 + 20x +3                            x- 4          x +4         x2 - 16 3. simplify ; use rules ofradicals  A.    718 + 650 -572

Explanation / Answer

B) f(5)=(5)2 + 3(5) -12          =25+15-12 = 28 domain {XER} 2) simplified to (5x+1)(2x+3)/(6x+1)(2x+3) (2X+3) CANCELSO YOU ARE LEFT WITH 5x+1/6x+1 B) 7(x+4)-5(X-4)/(x+4)(X+4) =60/(X+4)(X-4)   (JUSTGOT THE SAME DENOMENATORS--THE DENOMENATORS ARE THE SAME SO THEYCANCEL IF MULTIPLIED OUT) 7(X+4)-5(X-4) =60 EXPAND 7X+28-5X+20=60 2X=60-48 2X=12 X=6 3)792+6252-598      212+362-302

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