Test: Algebraic expressions I - Challenging

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Question 1:   Simplify the expression x 2 +( x 2 +3 )+x( 2-0.5x )
1.5 x 2 +2x+3
0.5 x 2 +3
1.5 x 2 -2x+3
1.5 x 2 -2x-3
Question 2:   Simplify: ( -4 a 5 b 3 ) 2 ( - 1 2 ab )
-8 a 11 b 7
-4 a 8 b 6
4 a 8 b 6
8 a 11 b 7
Question 3:   Find 24% of ( 2 1 7 + 3 14 ):( 4 5 7 )
1.2
0.12
12
120
Question 4:   The difference in the squares of two numbers is 25, the sum of these numbers is also 25. Find these numbers.
10 and 15
20 and 5
13 and 12
11 and 14
Question 5:   Simplify: ( 1+ c 2 ) 2 -2 c 2
1+c
1-c
1- c 2
1+ c 4
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