3 years ago

If f(x) = x2 – 2x + 3, then find f(-3).

Mathematics

1 answer:

Georgia [21]3 years ago

7 0

Answer:

f(-3) = 18

Step-by-step explanation:

We need just substitute x with (-3) and calculate it.

f(-3) = (-3)² -2*(-3) + 3 = 9 + 6 +3 = 18

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tigry1 [53]

Answer:

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Step-by-step explanation:

For $a=|b|$ , we have two cases:

$\begin{cases}a=b,\\a=-b\end{cases}$

Therefore, for $18=|15-3x|$ , we have the following cases:

$\begin{cases}18=15-3x,\\18=-(15-3x)\end{cases}$

Solving, we have:

$\begin{cases}18=15-3x, -3x=3, x=\boxed{-1},\\18=-(15-3x), 18=-15+3x, 33=3x, x=\boxed{11}\end{cases}$ .

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3 years ago

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3 years ago

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lara [203]

Answer:

$9\frac{3}{5}$

Step-by-step explanation:

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3 years ago