Question

Pls answer fast with EXPLANATION i will aurely mark as brainliast amd thanks ( Pls don't give irrevelent answers).​

Answer 1

Answer:

3) i} = 2x -7 ( X = -1)

= 2(-1) - 7

= -2 - 7

= -9

ii} = - x + 2

= - (-1) + 2

= 1 +2

= 3

iii} = x^2 + 2x +1

= (-1)^2 + 2(-1) +1

= 2 - 2 +1

= 1

iv} = 2x^2 - x - 2

= 2(-1)^2 -(-1) - 2

= 2 +1 -2

=1

7) i} = 3x - 5 - x + 9

= 2x +4 ( x=3)

= 2(3) +4

= 6 + 4

= 10

ii} = 2 - 8x + 4x + 4

= -4x +6

= -4(3) + 6

= -12 + 6

= -6

So , here are your all answers