" (1) "25m^(2)=9

Complete the following activity to sovle the quadratic equation by factorisation method : 25m^(2)=9

Solve the following quadratic equations by factorization. 25m^(2)=-9 .

The K_(sp) of Mg(OH)_(2) is 8.9 xx 10^(-12) at 25^(2)C . the pH of solution is adjusted to 9 . How much Mg^(2+) ion will be precipitated as Mg(OH)_(2) from a 0.1M MgCl_(2) solution at 25^(@)C ? Assume that MgCl_(2) is completely dissociated.

Solve the following quadratic equations by factorisation method: 25m^2=9

Factorise the following expressions. (i) a^2+8x+16 (ii) p^2-10p+25 (iii) 25m^2+30m+9 (iv) 49y^2+84yz+36z^2 (v) 4x^2-8x+4 (vi) 121b^2-88bc+16c^2 (vii) (l+m)^2-4lm (Hint : Expand (l+m)^2} first (viii) a^4+2a^2 b^2 +b^4

Factorise the following expressions. (i) a^2+8x+16 (ii) p^2-10p+25 (iii) 25m^2+30m+9 (iv) 49y^2+84yz+36z^2 (v) 4x^2-8x+4 (vi) 121b^2-88bc+16c^2 (vii) (l+m)^2-4lm (Hint : Expand (l+m)^2} first (viii) a^4+2a^2 b^2 +b^4

A plane is in level flight at constant speed and each of its wings has an area of 25m^(2) . If the speed of the air is 180km//h over the upper wing surface, determine the plane's mass . (Take air density to be 1 kg//m^(3) ). g=9.8m//s^(2) .

A plane is in level flight at constant speed and each of its wings has an area of 25m^(2) . If the speed of the air is 180km//h over the upper wing surface, determine the plane's mass . (Take air density to be 1 kg//m^(3) ). g=9.8m//s^(2) .