26. The diagonal of a rectangular field is 20 m more than the shorter side of it. If the shorter side is 10 m less than the longer side, then find the sides of the rectangular field.

लगाजनुहोस्ट । If \( \left[\begin{array}{cc}8 & -2 \\ 1 & 4\end{array}\right] A=2\left[\begin{array}{l}6 \\ 5\end{array}\right] \) then find matrix \( A \).

\( a ^ { 2 } + b ^ { 2 } = ? \)

3) The sign of function \( f(X)=7-X \) is not negative in .............. \( \begin{array}{lll}\text { (a) }]-\infty, 7[ & \text { (b) }[0,7[ & \text { (c) }]-\infty, 7]\end{array} \)

14 Ber 10 pat Napata 18 분 D 8 2. 3472/1 (b) Selesaikan persamaan \( 5+4 \sqrt{k}=9+8 \sqrt{2} \). Tulis jawapan dalam bentuk \( a+b \sqrt{2} \) dengan \( a \) dan \( b \) ialah integer. Solve the equation of \( 5+4 \sqrt{k}=9+8 \sqrt{2} \). Write the answer in the form of \( a+b \sqrt{2} \) with \( a \) and \( b \) are integers. [2 markah] [2 marks]

a) \( \frac{2}{7} x+\frac{5 x}{7}-3 x=8 \)