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3 years ago

5) If f(x)=x2-x, what is f(-5)? A. -30 B. -20 C. 20 D. 30

1 answer:

7 0

You simply plug it in.

f(x) = x^2 - x
f(-5) = -5^2 - (-5)
f(-5) = -25 - (-5)
f(-5) = -20

hope this was helpful for you.

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2 years ago

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3 years ago

a quadratic equation has a discriminant of 12. which could be the equation? a.0 = –x2 8x 2 b.0 = 2x2 6x 3 c.0 = –x2 4x 1 d.0 = 4

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Answer:

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Step-by-step explanation:

We have been given the discriminant 12

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First we will take option a which is $-x^2+8x+2=0$

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3 years ago

Read 2 more answers

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1. Make R (rate) subject

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