Write the equation of the line that is perp through the point \( (-2,-2) \). \( y+-2)=-\frac{7}{5}(x--2) \) \( y+2=-\frac{1}{5} x+2 \) \( y+2=-\frac{1}{5}+2-1.5 \)

act: \( 3 I(I-4 m+5 n) \) from \( 4 I(10 n-3 m+2 l) \) act: \( 3 a(a+b+c)-2 b(a-b+c) \) from \( 4 c(-a+b+c) \)

(c) Subtract: \( 31(1-4 m+5 n) \) from \( 4 I(10 n-3 m+21) \) (d) Subtract: \( 3 a(a+b+c)-2 b(a-b+c) \) from \( 4 c(-a+b+c \)

\( \frac { 1 } { r } x \frac { 1 - ( \frac { 1 } { r } ) ^ { n } } { 1 - \frac { 1 } { r } } \geq \frac { 9 r } { 100 } \Rightarrow 1 - \frac { 1 } { r ^ { n } } \geq \frac { 9 r } { 100 } \)

Simplify the expression: \( (x^{1/4}y^{1/2})^{8} \)

3. ( 0,5 điểm) Tìm \( x \) biết: \( x^{2}(x-1)+4=4 x \)