3 years ago

Please help and show work!

Mathematics

1 answer:

Lilit [14]3 years ago

3 0

Answer:

Step-by-step explanation:

The given quadratic must be rewritten in standard form before anything else is done: -2x^2 + 8x - 8 = 0. The coefficients of the x terms are {-2, 8, -8}.

The discriminant b^2 - 4ac is therefore (8)^2 - 4(-2)(-8), or 64 - 64, or 0.

A zero discriminant points to two real, equal solutions.

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$A=\left[\begin{array}{ccc}-1\\4\\4\end{array}\right] \\\\F=\left[\begin{array}{ccc}0&-2\end{array}\right] \\\\A\cdot F=\left[\begin{array}{ccc}-1\\4\\4\end{array}\right] \cdot\left[\begin{array}{ccc}0&-2\end{array}\right] =\left[\begin{array}{ccc}(-1)(0)&(-1)(-2)\\(4)(0)&(4)(-2)\\(4)(0)&(4)(-2)\end{array}\right]\\\\=\left[\begin{array}{ccc}0&2\\0&-8\\0&-8\end{array}\right]$

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