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2 years ago

Evaluate: f(x) = 2x^2 + 6x - 4; f(-5) *

Mathematics

2 answers:

jasenka [17]2 years ago

8 0

$f(x)=2x^2+6x-4\\$

Find f(-5) by substituting x = -5 in the equation.

$f(-5)=2(-5)^2+6(-5)-4\\f(-5)=2(25)-30-4\\f(-5)=50-34\\f(-5)=16$

Therefore, the answer is f(-5) = 16

grin007 [14]2 years ago

3 0

Answer:

f(-5)=126

Step-by-step explanation:

what you would do first is plug -5 in for x which would give you the equation of f(-5)= 2(-5)^2 + 6(-5) -4

then you multiply the negative 5 and you will get

f(-5)= -10^2 + 30 -4

remove that square by multiplying -10 by -10 and you will get

f(-5)= 100 + 30 -4

combine like terms and you will get

f(-5)=126

i hope this helped you and that i explained it to you in a way that you understand

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Alchen [17]

Answer:

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3 years ago

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OLga [1]

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3 years ago

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Roger wants to carpet a rectangular room with length of 8 3/4 feet and a width of 9 1/3 feet. If he has 85 square feet of carpet

Dima020 [189]

Answer:

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Step-by-step explanation:

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3 years ago

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IRISSAK [1]

Answer:

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The domain of the relation shown here is {-3, 5, 3, -5}. Note how each of these elements is linked to ONLY ONE value in the range {-6, 2, 1}. Because of that, we conclude that the table shown represents a function.

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2 years ago