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nignag [31]
3 years ago
7

F(X)=2x^2 +1 find and simplify:: if f(a) =19 find a. Isn't a just 19??

Mathematics
1 answer:
liberstina [14]3 years ago
5 0
2a^2+1=19\\
2a^2=18\\
a^2=9\\
a=-3 \vee a=3
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IgorLugansk [536]
(y + 1)^3 would just be dividing the two

If you want it completely simplified, then it’s the following:

(y + 1)(y + 1)(y + 1)

= y^2 + y + y + 1 (y + 1)

= y^2 + 2y + 1 (y + 1)

= y^3 + y^2 + 2y^2 + 2y + y + 1

= y^3 + 3y^2 + 3y + 1
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I hope my answer has come to your help. Thank you for posting your question here in Brainly.
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