Question

Given the following expressions, find its value if x=3

1. x-9


2. 3x+7


3. x²+4x-10


4. 2x²-6x+26



5. 3x²-6​

Answer 1

Answer:

1. -6

2. 16

Step-by-step explanation:

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Answer 2

Answer:

given

x= 3

_______________

1. x-9

3-9= -6

______________

2. 3x+7

3 x 3 +7

=9+7

= 16

_______________

3. x²+4x-10

=3²+4 x 3 -10

= 9+12-10

=11

_______________

4. 2x²-6x+26

= 2 x 3² - 6 x 3 +26

= 18-18+26

= 26

_______________

5. 3x²-6

= 3 x 3² - 6

= 27-6

= 21

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