Question

B. 1. If x = 1, find the value of :
(i) x + 1
(ii) -2x + 5
(iii) x2 - 4
(iv) 2x2 + x-1​

Answer 1

Answer:

1)2

2)3

3)1

4)4

Step-by-step explanation:

to solve and check the let x=1

put x=1 in equation and you will get answer

for example; x+1 =1+1=2

Answer 2

Answer:

1. 2

2. 3

3. -2

4. 4

Step-by-step explanation:

1. put x= 1

1+1=2

2. put x=1

-2×1+5

= -2+5

= 3

3. put x=1

1×2-4

=2-4

= -2

4. put x=1

2×2+1-1

= 4+0

=4