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Published by memshamiel5477, 2020-04-06 07:18:52

Practice 4.1 answer

Practice 4.1 answer

UNIT 4 : ALGEBRA

Practice 4.1

1. Write the coefficient and unknown each of the following algebraic terms.

Terms Coefficient Unknown
(sebutan) (pekali) (pembolehubah)

a) 12p 12 p
b) 焸 2
c) -3 x2

d) 焸 -1 k

1 x
3

2. Determine whether the following pairs of term are like terms or unlike terms.

Terms Like Terms Unlike Terms
(sebutan) (sebutan (sebutan tak
serupa)
serupa)

a) 8p, 8q √
b) 搘 t √
c) 㐴t‵搘 㐴t
d) 搘 焸 √


3. Simplify each of the following.

a) x  2x  5x  3y b) 3p  6p  5p  p
= 8x - 3y = 3p

b) 8a 2  3a 2  3a  7a c) 15  8xy  7  2xy  3x Unit 4: Algebra
= 11a2 - 10a = 8 - -9xy

1

UNIT 4 : ALGEBRA e) x  5  2x  7
d) mn  nm  1 = -x - 2
= 2mn - 1

g) a 2 b 3 x ab h) ( x 3 y 3 )( 4xy 3 )
= a 2+ 1 b 3+1
=a 3b 4 = 4 (x 3 + 1 y 3+3 )
= 4 x 4y 6
i) 3a 4b 2  5ab 7c 6
=15 a 4+1 b 2+7 c6 j) x 3 y 3 X xy 2
=15 a 5 b 9 c6
2

1
= 2 x 3+1 y 3+2

1
=2 x4y5

k) x3y3  xy3 l) 3 x2y3  xy5

 x3y3  3 x2y3
xy3 xy5

 x2  3xy 2or 3x
y2

m) 2a2b5c 6  (4a5 b3c 6 ) n)  10 x3 y 4 z2
 2x5 yz7
2a2b5c 6
  4a5b3c6  10x3y4z2
 2x5yz7
1b2 1 a3b2  Unit 4: Algebra
2a3 2
  or 

 5y3 or  5x2y3z5
x2z5

2


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