L. M are the two roots of the equation: \( x^{2}-21 x+4=0 \), then : \( \sqrt{L}+\sqrt{M}= \) \( \begin{array}{llll}25 & \text { (b) } 5 & \text { (c) }-5 & \text { (d) } \pm 5\end{array} \)

Factorise coumpletely. \( 21 a^{2}+28 a^{b} \)

A. Déterminer la forme canonique de chacun des polynômes suivants : 1. \( P(x)=3 x^{2}-6 x+9 \) 2. \( P(x)=-5 x^{2}+3 x+12 \) 3. \( P(x)=9 x^{2}-7 x \)

(b) \( 27 x^{2}-3 y^{2} \)

Show A and Show B are two television shows. The number of eplsodes of each show are consecutive integers whose sum is 233 . If there are more episodes of Show B, how many episodes of each were there? Show A Show B episodes Submit Answer

Use the point-slope form to write an equation of the line with the given slope and point. Then write the equation in slope-intercept form. slope 4 , passes through \( (4,6) \)