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3 years ago

Evaluate the expression when x= -7. x²+4x-3

Mathematics

2 answers:

netineya [11]3 years ago

7 0

49+(-29)-3.Answer:

The answer is -80

Step-by-step explanation:

1. What I did first was plug in -7 into "x", so then your expression is $(-7^{2} )+4*(-7)-3$

2. Then you multiply 7 two times and get - 49... So then you have -49+4(-7)-3

3. Then you multiply the 4 and -7 and get -29... So now you have -49+(-29)-3

4. Then you add -49 and -29. but keep the negative and get -77... so now you have -77-3

5. Then you add -77-3 but keep the negetive and get -80.

I hope this helps... have a wonderful day.

I am Lyosha [343]3 years ago

3 0

The answer is 18
-7^2+4(-7)-3
49+(-28)-3
21-3
18

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Evaluate the expression when x= -7. x²+4x-3