Po,biracu pibrithes. a) \( (x-5)(x+3)=x^{3}+x \) d) \( x-2 \quad 1-5 x=3 \)

o1. Найдите значени 1)(-12,4+8,9) \( \cdot \)1 \( \frac{3}{7} \); Nn)

\( 3.1 .3 y ^ { 4 } - 81 \)

The sum of the first two terms is \( 4 / 3 \) and the sum of terms 3 and 4 is 12 . Find the geometric progression. \( 3^{0}, 3^{1}, 3^{2} \) \( 3^{-1}, 3^{0}, 3^{1}, \ldots \ldots \) \( 3^{-2}, 3^{0}, 3^{1} \) \( 2 / 9,10 / 9,50 / 9, \ldots \). \( 1 / 9,11 / 9,11^{2} / 9, \ldots \ldots \)

Find all the second partial derivatives. \( w_{u u}=\sqrt{u^{7}+v^{9}} \) \( w_{u v}=0 u^{5} \) \( w_{v u}=0 \) \( w_{v v}=72 v^{7} \)

determina si \( b \) es una combinación lineal de \( a 1, a 2 \) y \( a 3 \). \( a 1=(4,4,-1), a 2=(2,1,-1), a 3=(1,0,2), b=(1,-1,1) \)