Page 145 - aljaber

@ @¶ìÿa@óÝy‹¾a@ u@ @QSR

c(a − b) ( ) c(a − b) ( ) )
)
b(c − a) a(b − c) )
ax2 + bx + c = 0 )
[AHSME 1956] ( )
:

c =b ( ) c =a ( ) a = bc ( ) a =b ()

[AHSME 1956] (

: 15 − 2 = 0

x2 − 4 x −1

7.5 ( ) 6.5 ( ) 5( ) 4 ()

2x2 − hx + 2k = 0 [AHSME 1957] (

kh .−3 4

k = −3 h = 8 ( ) k = 3 h = 8 ()

k = −3 h = −8 ( ) k = 3 h = −8 ( )

ax2 + bx + c = 0 [AHSME 1958] (

cba .

2b2 = 9ac ( ) 4b2 = 9c ( )

b2 = 8ac ( ) 2b2 = 9a ( )

r ax2 + bx + c = 0 [AHSME 1985] (

s2 r2 x 2 + px + q = 0 .s

b2 − 2c2 ( ) 2ac − b2 ( ) b2 − 2ac ( ) p
a2 a2 a2
b2 − 4ac ( )

a2