Pre-Calculus
SolvingusingGNAV
*"'". KEY
Date----_Block
Solvethe equationby
extractingsquareroots.
1.
4 x 2- 2 5
2.
3 ( x + + ) 2= g
3.
2y2 -g=6-2y2
4.
1-x=i%
sicrme
e-J-:--tlt_€_ -i'g
-
4 t.l
T
?---_vr_-_-__*____
rrE
-
Sofvethe equationby
compfeting
the square.
x 2+ 6 x = 7
q__x:_rf+_/____
Solvethe equationusing
the quadratic
formufa.
5.
6.
7.
x 2+ g x - 2 = O
3x+4- 12
5-t_::'1 13€_
G-X-=jlr_:J
xg+5)=Iz
xe+Fx- r1=o
-st4far
A
-
.__r_
__.L_
sofvethe equationby factoring.
suppor.t
yourworkgraphicarfy.
8.
9.
10.
*2 -*-20=0
4x2 -8,r*3=0
x(3x-7)=A
?xt-'lx-u=o
e-J15;:_L'___
s-:x:!L*3/L__
10v= ?zs=
11,
Estimateanyx- and y- intercepts
thatare shownon the graph.
X-in*i-a, D,3
1 1-d---u'inn*: O
t-5,5l bY{-5, 5l
12.
Solvethe equationgraphically
by findingx- intercepts.
cAuc (e'o Trr-nce)
t'"tTF.
*2 +*-1=0
LiLcrc
;eP$B?ry!, ,,'
AiE/t^l 8w'*
12x=.blg,-/.btg
- l. b\t
13. Solvetheequationalgebraically.
V-sl=z
13--t -=-hrJO
Use a methodof yourchoiceto solvethe equation.
14.
*2+*-2=O
14 X =:?rl-_--
15.
l2x-Il=5
rs_xj_:a+ 3
16.
x3 + 4x2- 3x- 2 = o
6tz1\',j
_
calc.,
rzf.r.T=+l x"+Io=7tr
}'
X-3 - ?x = e{x t}x
I-"F-*=4
19.
Severalof the WorldCup '94 soccermatcheswereplayedin Stanford
University's
stadiumin MenloPark,Caslifornia.
The fieldis 30 yardslongerthan
2.
it is wide,andthe areaof the fieldis 8800yd Whatare the dimensions
of this
soccerfield?
1eiufdlA, = 8AH4talg+4t= t rdJo{.