−3x+3y=9 2x−7y=−14

Mathematics

1 answer:

svet-max [94.6K]3 years ago

7 0

(x, y) = (-7/5, 8/5)

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Find the polynomial M if 2x^2− 1/3 ax+by−M=0.

PSYCHO15rus [73]

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3 years ago

Please solve this question. It's about inverse matrix. ASAP!!

sweet-ann [11.9K]

Answer:

Step-by-step explanation:

$A=\begin{bmatrix}2&3\\4&7\end{bmatrix}\\\\A^{-1} =\begin{bmatrix} \dfrac{7}{2} & \dfrac{-3} {2}\\-2&1 \end{bmatrix}\\\\A*A^{-1}=1\pi_2=T\\\\A^2+3T=\begin{bmatrix} 14&27\\36&61 \end{bmatrix}+\begin{bmatrix} 1&0\\0&1 \end{bmatrix}=\begin{bmatrix} 17&27\\36&64 \end{bmatrix}$