Bài tập Toán cơ bản số 48

Created by T. Madas
Question 15
Factorize each of the following quadratic expressions.

a) x 2 − 3 x − 40
b) x 2 − 14 x + 24
c) x 2 + 13 x + 36
d) x 2 − 17 x + 42
e) x 2 + 18 x + 45
f)

x 2 + 14 x + 40

g) x 2 − 19 x + 48
h) x 2 − 8 x − 48

Question 16
Factorize each of the following quadratic expressions.

a) x 2 − 14 x + 45
b) x 2 − 15 x + 50
c) x 2 + 6 x − 40
d) x 2 − 30 x + 56
e) x 2 − 9 x − 52
f)

x 2 + 4 x − 45

g) x 2 + 15 x + 56
h) x 2 + 37 x − 360

Created by T. Madas


Created by T. Madas
Question 17
Factorize each of the following quadratic expressions.

a) 2 x 2 − 5 x + 3
b) 2 x 2 − 11x + 15
c) 3 x 2 − 10 x + 8
d) 2 x 2 − x − 10
e) 3 x 2 + 11x + 6
f) 3 x 2 − 8 x + 4
g) 5 x 2 + 6 x − 8
h) 2 x 2 − 9 x − 18

Question 18
Factorize each of the following quadratic expressions.

a) 3 x 2 − 5 x − 12
b) 5 x 2 + 19 x − 4
c) 3 x 2 − 16 x + 5
d) 3 x 2 − 11x + 6
e) 3 x 2 + x − 4
f) 3 x 2 + x − 2
g) 2 x 2 + 7 x + 5
h) 3 x 2 + 11x − 4

Created by T. Madas

Created by T. Madas
Question 19
Factorize each of the following quadratic expressions.

a) 2 x 2 + 7 x + 6
b) 5 x 2 − 12 x − 9
c) 2 x 2 − 13 x − 24
d) 3 x 2 + 2 x − 8
e) 2 x 2 + 13 x + 15
f) 2 x 2 + 3 x − 20
g) 2 x 2 − 5 x − 18
h) 3 x 2 + 22 x − 16

Question 20
Factorize each of the following quadratic expressions.

a) 3 x 2 − 17 x + 20
b) 2 x 2 − 3 x − 5
c) 5 x 2 − 7 x + 2
d) 3 x 2 + 13 x + 12
e) 2 x 2 − 15 x + 27
f) 7 x 2 − 9 x − 10
g) 3 x 2 − 13 x + 14
h) 2 x 2 + 9 x − 18

Created by T. Madas


Created by T. Madas

Question 21
Factorize each of the following quadratic expressions.

a) 2 x 2 + 7 x − 30
b) 2 x 2 + 11x − 30
c) 4 x 2 + 8 x + 3
d) 4 x 2 − 11x − 3
e) 4 x 2 + 4 x − 15
f) 4 x 2 − 7 x − 2
g) 4 x 2 + 5 x − 6
h) 4 x 2 − 8 x − 5

Question 22
Factorize each of the following quadratic expressions.

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

Created by T. Madas