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
Answers
Answered by
3
Answer:
1. -6
2. 16
Step-by-step explanation:
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Answered by
5
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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