Question

3. Find the value of the following expressions, when x=-1:
(1) 2x - 7
(ii) - x + 2
(ii) x2 + 2x + 1
(iv) 2x²-x-2​

Answer 1

Answer:

1) -9

2) 3

3) 0

4) 1

hope it helps...

Answer 2

Answer:

+ 2= 3. ... Ex 12.3 , 3 - Chapter 12 Class 7 Algebraic Expressions.