Question

findthe value of expressions, when x = - 1
(1) x ^ 2 - 2x - 1
(11) 2x ^ 2 + x + 3​

Answer 1

Answer:

1) 2

11) 4

Step-by-step explanation:

Hey just substitute the value of x and solve the equation, practice more of this type as they are very important in higher classes, ATB:)

Answer 2

Answer:

1)x ^ 2 - 2x - 1

-1²-2(-1)-1

-1 +2 -1

-2+2

0

2) 2x ^ 2 + x + 3

2(-1)² + (-1) + 3

2 -1 +3

2 +2

4