Bài tập toán cơ bản số 32

Created by T. Madas
Question 22
Factorize each of the following quadratic expressions.

a) 4 x 2 − 5 x − 9 = ( x + 1)( 4 x − 9 )
b) 4 x 2 + 16 x + 15 = ( 2 x + 5 )( 2 x + 3)
c) 4 x 2 − 19 x − 5 = ( 4 x + 1)( x − 5)
d) 4 x 2 − 33x + 8 = ( x − 8 )( 4 x − 1)
e) 4 x 2 + 5 x − 9 = ( 4 x + 9 )( x − 1)
f) 4 x 2 − 20 x + 9 = ( 2 x − 1)( 2 x − 9 )
g) 4 x 2 − 11x − 20 = ( 4 x + 5 )( x − 4 )
h) 4 x 2 + 5 x − 21 = ( 4 x − 7 )( x + 3)

Created by T. Madas


Created by T. Madas
Question 23
Factorize each of the following quadratic expressions.

a) 4 x 2 − 27 x + 18 = ( 4 x − 3)( x − 6 )
b) 6 x 2 + 7 x − 3 = ( 2 x + 3)( 3x − 1)
c) 6 x 2 − 5 x − 4 = ( 2 x + 1)( 3x − 4 )
d) 6 x 2 + 19 x + 10 = ( 2 x + 5 )( 3x + 2 )
e) 6 x 2 + 7 x − 10 = ( x + 2 )( 6 x − 5)
f) 6 x 2 − 13x − 15 = ( 6 x + 5 )( x − 3)
g) 6 x 2 − 17 x + 10 = ( x − 2 )( 6 x − 5 )
h) 6 x 2 − 13 x + 6 = ( 2 x − 3)( 3x − 2 )

Created by T. Madas