Mathematics: please help me Which of the following choices will evaluate the function ƒ(x) = -(-x), when x = -3? 3 -1 -3 None of these choices are correct.

please help me Which of the following choices will

mubasharshafiq1583

30.01.2022

-3

Step-by-step explanation:

Given the function f(x) = -(-x)

we want to evaluate f(-3)

What we do simply here is substitute the value of -3 for x in the equation

That would be ;

f(-3) = -(-(-3)) = -(3) = -3

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brandicarney70p8jlsp

31.03.2020

we have

$y=(x + 3)^{2}+(x + 4)^{2}\\y=(x^{2} +6x+9) +(x^{2}+8x+16)\\y=2x^{2}+14x+25$

Group terms that contain the same variable, and move the constant to the opposite side of the equation

$y-25=2x^{2}+14x$

Factor the leading coefficient

$y-25=2(x^{2}+7x)$

Complete the square. Remember to balance the equation by adding the same constants to each side

$y-25+2*(3.5^{2})=2(x^{2}+7x+3.5^{2})$

$y-0.5=2(x^{2}+7x+12.25)$

Rewrite as perfect squares

$y-0.5=2(x+3.5)^{2}$

$y=2(x+3.5)^{2}+0.5$

the vertex is the point (-3.5,0.5)

therefore

the answer is

the equation rewritten in vertex form is equal to

$y=2(x+3.5)^{2}+0.5$

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