3 years ago

???? Help me guys <3

Mathematics

1 answer:

Ede4ka [16]3 years ago

3 0

Answer:

your answer is D

the circle is filled in which means AND equal too

the arrow is bold and its pointing down showing that X is less than 4.

your answer is D and thats final.

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ddd [48]

$f(x)=5x^2-3\\\\\\
f(x+a)=5(x+a)^2-3=5(x^2+2ax+a^2)-3=\\\\=\boxed{5x^2+10ax+5a^2-3}$

On the other hand:

$f(x+a)=5x^2+30x+42$

so:

$10ax=30x\\\\10a=30\qquad|:10\\\\\boxed{a=3}$

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