Question

A. A student simplifies the algebraic expressions in the left column of the

Answer 1

Among all the filled solutions first four solutions, sixth , eight , elventh to thirteenth are correct.

Given twenty expressions and we are required to find the value of expressions when x=0 and x=1.

Expression is combination of numbers, fractions, coefficients, mostly not found in equal to form.

1)2x+3-2+x

when x=0,

=2*0+3-2+0

=1

when x=1,

=2*1+3-2+1

=4

2)4x-5-2x

when x=0,

=4*0-5-2*0

=-5

when x=1,

=4*1-5-2*1

=-3

3)2-3(x+1)+4x

when x=0

=2-3(0+1)+4*0

=-1

when x=1

=2-3(1+1)+4*1

=0

4)4+3x-x-1

when x=0

=4+3*0-0-1

=3

when x=1

=4+3*1-1-1

=5

5)6x-5-6x

when x=0

=6*0-5-6*0

=-5

6) 5(x+1)-x+2

when x=0

=5(0+1)-0+2

=7

when x=1

=5(1+1)-1+2

=11

7) 2x-7+5x-3

when x=0

=2*0-7+5*0-3

=-10

when x=1

=2*1-7+5*1-3

=-3

8) 3+2x-3

when x=0

=3+2*0-3

=0

when x=1

=3+2*1-3

=2

9) 14-2x-5x+2

when x=0

=14-2*0-5*0+2

=16

when x=1

=14-2*1-5*1+2

=9

10) 5-4x(1+3)+7x

when x=0

=5-4*0(1+3)+7*0

=5

when x=1

=5-4*1(1+3)+7*1

=-4

11) 3x+1

when x=0

=3*0+1

=1

when x=1

=3*1+1

=4

12) 2x+5

when x=0

=2*0+5

=5

when x=1

=2*1+5

=7

13)x-3

when x=0

=0-3

=-3

when x=1

=1-3

=-2

14)2x+3

when x=0

=2*0+3

=3

when x=1

=2*1+3

=5

15) 12x-5

when x=0

=12*0-5

=-5

when x=1

=12*1-5

=7

16) 4x+7

when x=0

=4*0+7

=7

when x=1

=4*1+7

=11

17) 6x-5

when x=0

=6*0-5

=-5

when x=1

=6*1-5

=1

18) 2x

when x=0

=2*0

=0

when x=1

=2*1

=2

19) 16-5x

when x=0

=16-5*0

=16

when x=1

=16-5*1

=11

20) 5-9x

when x=0

=5-9*0

=5

when x=1

=5-9*1

=-4

Hence it is found that among all the filled solutions first four solutions, sixth , eight , elventh to thirteenth are correct.

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