Bài tập toán cơ bản số 36

Created by T. Madas
Question 31
Square the following brackets.
2

= 9 + 24 p + 16 p 2

2

= 4 y 2 − 36 y + 81

a)

(3 + 4 p )

b)

( 2 y − 9)

c)

( 5a + 1)

d)

( 6b + 2 )

2

= 36b 2 + 24b + 4

e)

( 4h − 2 )

2

= 16h 2 − 16 z + 4

f)

(6 − 2 y )

2

= 36 − 24 y + 4 y 2

2

= 25a 2 + 10a + 1

Question 32
Square the following brackets.
2

= 1 + 8q + 16q 2

( 3 − 5k )

2

= 9 − 30k + 25k 2

c)

( 7d − 1)

2

= 49d 2 − 14d + 1

d)

( 6x + 4)

2

= 36 x 2 + 48 x + 16

e)

( 3 y − 3)

2

= 9 y 2 − 18 y + 9

f)

( 7 − 2w )

a)

(1 + 4q )

b)

2

= 49 − 28w + 4 w2

Created by T. Madas


Created by T. Madas
Question 33
Square the following brackets.
2

a)

( 8 + 2n )

b)

(1 − 5c )

c)

( 4m − 1)

d)

( 8 p + 1)

e)

( 6n − 1)

f)

( 3m + 2 )

2

= 64 + 32n + 4n 2
= 1 − 10c + 25c 2

2

= 16m 2 − 8m + 1

2

= 64 p 2 + 16 p + 1

2

= 36n 2 − 12n + 1
2

= 9m 2 + 12m + 4

Question 34
Square the following brackets.
2

= 16h 2 − 32h + 16

2

= 9 − 12 x + 4 x 2

2

= 1 + 8c + 16c 2

a)

( 4h − 4 )

b)

(3 − 2x )

c)

(1 + 4c )

d)

(5 − 2 p )

e)

( 7t + 5 )

f)

( 5d − 2 )

2

2

2

= 25 − 20 p + 4 p 2

= 49t 2 + 70t + 25
= 25d 2 − 20d + 4

Created by T. Madas