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3 years ago

What is the value of f(-2)? A. -2 B. -8 C. 8 D. 4

Mathematics

2 answers:

kotykmax [81]3 years ago

3 0

I think it is C
Thanks

mr Goodwill [35]3 years ago

3 0

Answer:

B. (-8)

Step-by-step explanation:

-2 falls in between the interval [-3,-1]

Therefore the equation would be f(x)=4x

.... f(-2)=4(-2)

4 x -2 = -8

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4 years ago

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3 years ago

Let a, b, c, and d be non-zero real numbers. If the quadratic equation ax(cx + d) = -b(cx+d) is solved for x, which of the follo

LiRa [457]

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Option d

Step-by-step explanation:

given that a, b, c, and d be non-zero real numbers.

$ax(cx + d) = -b(cx+d) \\acx^2+x(ad+bc)+bd =0$

we can factorise this equation by grouping

$(acx^2+xad)+)xbc+bd) =0\\ax(cx+d) +b(cx+d) =0\\(ax+b)(cx+d) =0$

Equate each factor to 0 to get

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3 years ago